{"id":273001,"date":"2026-07-28T03:00:03","date_gmt":"2026-07-28T08:00:03","guid":{"rendered":"https:\/\/langcom.org\/?p=273001"},"modified":"2026-07-28T03:00:03","modified_gmt":"2026-07-28T08:00:03","slug":"adjectives-negative-prefixes-b2","status":"publish","type":"post","link":"https:\/\/langcom.co.uk\/zh\/blog\/adjectives-negative-prefixes-b2\/","title":{"rendered":"Adjectives with Negative Prefixes: Un-, In-, Dis- (B2 English Vocabulary)"},"content":{"rendered":"<div class=\"lc-answer\"><strong>Adjectives with negative prefixes like <span data-no-translation>un-<\/span>, <span data-no-translation>in-<\/span>, <span data-no-translation>dis-<\/span>, <span data-no-translation>im-<\/span>, <span data-no-translation>il-<\/span>, \uff0c \u548c <span data-no-translation>ir-<\/span> change the meaning of a word, often making it the opposite.<\/strong> These prefixes attach to the beginning of an adjective to create a new word with a contrasting sense. For example, <span data-no-translation>happy<\/span> becomes <span data-no-translation>unhappy<\/span>, meaning &#8216;not happy&#8217;. Mastering these prefixes is crucial for B2 English learners as it significantly expands your vocabulary and helps you understand nuanced meanings in texts and conversations. While some patterns exist, like <span data-no-translation>im-<\/span> often appearing before words starting with &#8216;m&#8217; or &#8216;p&#8217;, many combinations need to be learned through exposure and practice. Understanding these common prefixes will allow you to express a wider range of ideas and comprehend complex English more effectively.<\/div>\n<h2>What Are Prefixes and How Do They Change Adjectives?<\/h2>\n<p>A prefix is a group of letters added to the beginning of a word. It changes the word&#8217;s meaning.<\/p>\n<p>When we add a negative prefix to an adjective, it usually creates an antonym \u2013 a word with the opposite meaning. Think of it as adding &#8216;not&#8217; or &#8216;the opposite of&#8217; to the original adjective.<\/p>\n<ul>\n<li>For example, <span data-no-translation>possible<\/span> means &#8216;can happen&#8217;. Add <span data-no-translation>im-<\/span>, and it becomes <span data-no-translation>impossible<\/span>, meaning &#8216;cannot happen&#8217;.<\/li>\n<li>Another example is <span data-no-translation>successful<\/span>, meaning &#8216;achieving a desired result&#8217;. With <span data-no-translation>un-<\/span>, it becomes <span data-no-translation>unsuccessful<\/span>, meaning &#8216;not achieving a desired result&#8217;.<\/li>\n<\/ul>\n<div class=\"lc-cta lc-cta-placement\" style=\"border-radius:14px;padding:30px;margin:30px 0;text-align:center;color:#fff;background:linear-gradient(135deg,#2B87DA,#29C4A9);\"><h3 style=\"color:#fff;font-size:22px;font-weight:800;margin:0 0 8px;\">\u270d\ufe0f \u4e0d\u786e\u5b9a\u81ea\u5df1\u7684\u6c34\u5e73\u5982\u4f55\uff1f<\/h3><p style=\"margin:0 0 16px;opacity:.95;\">\u53c2\u52a0\u6211\u4eec\u7684\u514d\u8d39\u5206\u7ea7\u6d4b\u8bd5\uff0c\u83b7\u5f97\u7531\u5251\u6865\u8ba4\u8bc1\u8003\u5b98\u63d0\u4f9b\u7684\u4e2a\u6027\u5316\u53cd\u9988\u3002.<\/p><a href=\"\/zh\/%e8%8b%b1%e8%af%ad\/%e5%ad%a6%e9%99%a2\/%e5%85%8d%e8%b4%b9%e6%b5%8b%e8%af%95\/\" style=\"display:inline-block;margin-top:8px;padding:13px 30px;border-radius:8px;font-weight:700;text-decoration:none;background:#0A2540;color:#fff;\">\u53c2\u52a0\u6211\u4eec\u7684\u514d\u8d39\u5206\u7ea7\u6d4b\u8bd5<\/a><\/div>\n<h2>Common Negative Prefixes in English<\/h2>\n<p>There are several common prefixes that make adjectives negative. While there are some general rules, often you need to learn which prefix goes with which adjective.<\/p>\n<ul>\n<li><strong><span data-no-translation>Un-<\/span>:<\/strong> This is the most common negative prefix. It can be added to many adjectives. For example: <span data-no-translation>unhappy<\/span>, <span data-no-translation>unbelievable<\/span>, <span data-no-translation>unsinkable<\/span>.<\/li>\n<li><strong><span data-no-translation>In-<\/span>, <span data-no-translation>Im-<\/span>, <span data-no-translation>Il-<\/span>, <span data-no-translation>Ir-<\/span>:<\/strong> These prefixes are variations of the same idea (&#8216;not&#8217;). The choice depends on the first letter of the adjective:\n<ul>\n<li><span data-no-translation>Im-<\/span> is used before adjectives starting with <span data-no-translation>m<\/span> \u6216 <span data-no-translation>p<\/span>. Examples: <span data-no-translation>impossible<\/span>, <span data-no-translation>impolite<\/span>, <span data-no-translation>improbable<\/span>.<\/li>\n<li><span data-no-translation>Il-<\/span> is used before adjectives starting with <span data-no-translation>l<\/span>. Examples: <span data-no-translation>illegal<\/span>, <span data-no-translation>illegible<\/span>.<\/li>\n<li><span data-no-translation>Ir-<\/span> is used before adjectives starting with <span data-no-translation>r<\/span>. Examples: <span data-no-translation>irregular<\/span>, <span data-no-translation>irrelevant<\/span>.<\/li>\n<li><span data-no-translation>In-<\/span> is used before many other adjectives, especially those starting with <span data-no-translation>c<\/span>, <span data-no-translation>d<\/span>, <span data-no-translation>e<\/span>, <span data-no-translation>a<\/span>. Examples: <span data-no-translation>inactive<\/span>, <span data-no-translation>incomplete<\/span>, <span data-no-translation>indecisive<\/span>, <span data-no-translation>incredible<\/span>.<\/li>\n<\/ul>\n<\/li>\n<li><strong><span data-no-translation>Dis-<\/span>:<\/strong> This prefix also means &#8216;not&#8217; or &#8216;the opposite of&#8217;, often implying a lack of something. Examples: <span data-no-translation>dishonest<\/span>, <span data-no-translation>disagreeable<\/span>, <span data-no-translation>disloyal<\/span>.<\/li>\n<\/ul>\n<h2>Why Is It Important to Learn These Prefixes?<\/h2>\n<p>Learning adjectives with negative prefixes is a powerful way to expand your B2 vocabulary efficiently. Instead of learning two separate words (e.g., &#8216;happy&#8217; and &#8216;sad&#8217;), you learn a base word and how a prefix can create its opposite.<\/p>\n<ul>\n<li><strong>Understanding Nuance:<\/strong> It helps you grasp subtle differences in meaning. For instance, <span data-no-translation>uninterested<\/span> (not interested) is different from <span data-no-translation>disinterested<\/span> (impartial, unbiased).<\/li>\n<li><strong>Reading Comprehension:<\/strong> You can often guess the meaning of an unfamiliar adjective if you know its base word and the meaning of the prefix.<\/li>\n<li><strong>Speaking and Writing Fluency:<\/strong> Using these adjectives correctly makes your English sound more natural and precise.<\/li>\n<\/ul>\n<table>\n<caption>Common Adjectives with Negative Prefixes<\/caption>\n<thead>\n<tr>\n<th>Base Adjective<\/th>\n<th>Negative Prefix<\/th>\n<th>New Adjective<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td><span data-no-translation>happy<\/span><\/td>\n<td><span data-no-translation>un-<\/span><\/td>\n<td><span data-no-translation>unhappy<\/span><\/td>\n<\/tr>\n<tr>\n<td><span data-no-translation>believable<\/span><\/td>\n<td><span data-no-translation>un-<\/span><\/td>\n<td><span data-no-translation>unbelievable<\/span><\/td>\n<\/tr>\n<tr>\n<td><span data-no-translation>successful<\/span><\/td>\n<td><span data-no-translation>un-<\/span><\/td>\n<td><span data-no-translation>unsuccessful<\/span><\/td>\n<\/tr>\n<tr>\n<td><span data-no-translation>sinkable<\/span><\/td>\n<td><span data-no-translation>un-<\/span><\/td>\n<td><span data-no-translation>unsinkable<\/span><\/td>\n<\/tr>\n<tr>\n<td><span data-no-translation>possible<\/span><\/td>\n<td><span data-no-translation>im-<\/span><\/td>\n<td><span data-no-translation>impossible<\/span><\/td>\n<\/tr>\n<tr>\n<td><span data-no-translation>polite<\/span><\/td>\n<td><span data-no-translation>im-<\/span><\/td>\n<td><span data-no-translation>impolite<\/span><\/td>\n<\/tr>\n<tr>\n<td><span data-no-translation>probable<\/span><\/td>\n<td><span data-no-translation>im-<\/span><\/td>\n<td><span data-no-translation>improbable<\/span><\/td>\n<\/tr>\n<tr>\n<td><span data-no-translation>active<\/span><\/td>\n<td><span data-no-translation>in-<\/span><\/td>\n<td><span data-no-translation>inactive<\/span><\/td>\n<\/tr>\n<tr>\n<td><span data-no-translation>complete<\/span><\/td>\n<td><span data-no-translation>in-<\/span><\/td>\n<td><span data-no-translation>incomplete<\/span><\/td>\n<\/tr>\n<tr>\n<td><span data-no-translation>credible<\/span><\/td>\n<td><span data-no-translation>in-<\/span><\/td>\n<td><span data-no-translation>incredible<\/span><\/td>\n<\/tr>\n<tr>\n<td><span data-no-translation>legal<\/span><\/td>\n<td><span data-no-translation>il-<\/span><\/td>\n<td><span data-no-translation>illegal<\/span><\/td>\n<\/tr>\n<tr>\n<td><span data-no-translation>relevant<\/span><\/td>\n<td><span data-no-translation>ir-<\/span><\/td>\n<td><span data-no-translation>irrelevant<\/span><\/td>\n<\/tr>\n<tr>\n<td><span data-no-translation>regular<\/span><\/td>\n<td><span data-no-translation>ir-<\/span><\/td>\n<td><span data-no-translation>irregular<\/span><\/td>\n<\/tr>\n<tr>\n<td><span data-no-translation>honest<\/span><\/td>\n<td><span data-no-translation>dis-<\/span><\/td>\n<td><span data-no-translation>dishonest<\/span><\/td>\n<\/tr>\n<tr>\n<td><span data-no-translation>loyal<\/span><\/td>\n<td><span data-no-translation>dis-<\/span><\/td>\n<td><span data-no-translation>disloyal<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>\u793a\u4f8b<\/h2>\n<ul>\n<li><span data-no-translation>The movie was so <span data-no-translation>unbelievable<\/span> that I couldn&#8217;t enjoy it.<\/span><\/li>\n<li><span data-no-translation>It&#8217;s <span data-no-translation>impossible<\/span> to finish this project in one day.<\/span><\/li>\n<li><span data-no-translation>Her excuse for being late was completely <span data-no-translation>irrelevant<\/span> to the discussion.<\/span><\/li>\n<li><span data-no-translation>The company&#8217;s first attempt was <span data-no-translation>unsuccessful<\/span>, but they tried again.<\/span><\/li>\n<li><span data-no-translation>He was <span data-no-translation>disloyal<\/span> to his friends by sharing their secrets.<\/span><\/li>\n<li><span data-no-translation>Parking here is <span data-no-translation>illegal<\/span>, so you might get a fine.<\/span><\/li>\n<\/ul>\n<h2>\u7ec3\u4e60<\/h2>\n<div class=\"h5p-iframe-wrapper\"><iframe id=\"h5p-iframe-519\" class=\"h5p-iframe\" data-content-id=\"519\" style=\"height:1px\" src=\"about:blank\" frameborder=\"0\" scrolling=\"no\" title=\"A05 L5 VOCABULARY Adjectives with prefixes\"><\/iframe><\/div>\n<div class=\"lc-cta lc-cta-exam\" style=\"border-radius:14px;padding:30px;margin:30px 0;text-align:center;color:#fff;background:#0A2540;\"><h3 style=\"color:#F2B705;font-size:22px;font-weight:800;margin:0 0 8px;\">\u51c6\u5907\u597d\u83b7\u5f97\u8bc1\u4e66\u4e86\u5417\uff1f<\/h3><p style=\"margin:0 0 16px;opacity:.92;\">Langcom \u8bfe\u7a0b\u65e8\u5728\u5e2e\u52a9\u5b66\u751f\u5907\u8003\u5251\u6865\u8003\u8bd5\u3001IELTS\u3001TOEFL\u3001DELE\u3001SIELE \u548c Michigan \u8003\u8bd5\u3002.<\/p><a href=\"\/zh\/\" style=\"display:inline-block;margin-top:8px;padding:13px 30px;border-radius:8px;font-weight:700;text-decoration:none;background:#F2B705;color:#0A2540;\">\u5f00\u59cb\u4f7f\u7528 Langcom<\/a><\/div>\n<h2>\u897f\u73ed\u7259\u8bed\u6bcd\u8bed\u8005\u5e38\u72af\u7684\u9519\u8bef<\/h2>\n<p>Spanish speakers sometimes make mistakes with negative prefixes due to direct translation or confusion between similar-sounding prefixes.<\/p>\n<ul>\n<li><strong>Using the wrong prefix:<\/strong> A common error is using <span data-no-translation>in-<\/span> where <span data-no-translation>un-<\/span> is needed, or vice-versa. For example, saying <span data-no-translation>*inhappy<\/span> \u800c\u4e0d\u662f <span data-no-translation>unhappy<\/span>, \u6216 <span data-no-translation>*undecisive<\/span> \u800c\u4e0d\u662f <span data-no-translation>indecisive<\/span>.<\/li>\n<li><strong>Direct translation of &#8216;un-&#8216;:<\/strong> Sometimes, Spanish speakers might try to use <span data-no-translation>in-<\/span> for all negative meanings, similar to Spanish &#8216;in-&#8216;. Remember the specific rules for <span data-no-translation>im-<\/span>, <span data-no-translation>il-<\/span>, <span data-no-translation>ir-<\/span>, and the widespread use of <span data-no-translation>un-<\/span>. \u4f8b\u5982\uff0c, <span data-no-translation>*inpossible<\/span> is incorrect; it should be <span data-no-translation>impossible<\/span>.<\/li>\n<li><strong>Forgetting the prefix rules:<\/strong> It&#8217;s easy to forget that <span data-no-translation>im-<\/span> goes with &#8216;m&#8217; or &#8216;p&#8217;, <span data-no-translation>il-<\/span> with &#8216;l&#8217;, and <span data-no-translation>ir-<\/span> with &#8216;r&#8217;. For example, <span data-no-translation>*inpolite<\/span> is wrong; it&#8217;s <span data-no-translation>impolite<\/span>.<\/li>\n<\/ul>\n<h2>\u5e38\u89c1\u95ee\u9898<\/h2>\n<h3>Can all adjectives take a negative prefix?<\/h3>\n<p>No, not all adjectives can take a negative prefix. For example, we don&#8217;t say <span data-no-translation>*ungood<\/span> \u6216 <span data-no-translation>*inbad<\/span>. For these, we use different words like <span data-no-translation>bad<\/span> \u6216 <span data-no-translation>not good<\/span>. You need to learn which adjectives commonly combine with prefixes.<\/p>\n<h3>Are there other types of prefixes for adjectives?<\/h3>\n<p>Yes, besides negative prefixes, there are prefixes that indicate repetition (like <span data-no-translation>re-<\/span> \u5728 <span data-no-translation>reusable<\/span>), time\/order (like <span data-no-translation>pre-<\/span> \u5728 <span data-no-translation>pre-cooked<\/span>), or degree (like <span data-no-translation>super-<\/span> \u5728 <span data-no-translation>super-fast<\/span>). However, negative prefixes are among the most common and useful for B2 learners.<\/p>\n<h3>How can I remember which negative prefix to use?<\/h3>\n<p>The best way is through consistent exposure and practice. Read a lot, pay attention to new words, and try to use them in your speaking and writing. Flashcards can also be helpful. Remember the basic rules for <span data-no-translation>im-<\/span>, <span data-no-translation>il-<\/span>, <span data-no-translation>ir-<\/span>, and know that <span data-no-translation>un-<\/span> is very common.<\/p>\n<h3>How are adjectives with negative prefixes useful for B2 exams?<\/h3>\n<p>For B2 exams, understanding adjectives with negative prefixes is vital for vocabulary sections, reading comprehension, and listening tasks. You might encounter questions where you need to identify antonyms or choose the correct word to complete a sentence, often involving these prefixes. It helps you understand nuanced meanings and improves your overall lexical range.<\/p>","protected":false},"excerpt":{"rendered":"<p>Adjectives with negative prefixes like un-, in-, dis-, im-, il-, and ir- change the meaning of a word, often making it the opposite. These prefixes attach to the beginning of an adjective to create a new word with a contrasting sense. For example, happy becomes unhappy, meaning &#8216;not happy&#8217;. Mastering these prefixes is crucial for [&hellip;]<\/p>\n","protected":false},"author":192,"featured_media":273678,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"bwfblock_default_font":"","langcom_teaches":"Adjectives with prefixes","langcom_cefr":"B2","langcom_type":"vocabulary","langcom_faq":"[{\"q\": \"Can all adjectives take a negative prefix?\", \"a\": \"No, not all adjectives can take a negative prefix. For example, we don't say <span data-no-translation>*ungood<\/span> or <span data-no-translation>*inbad<\/span>. For these, we use different words like <span data-no-translation>bad<\/span> or <span data-no-translation>not good<\/span>. You need to learn which adjectives commonly combine with prefixes.\"}, {\"q\": \"Are there other types of prefixes for adjectives?\", \"a\": \"Yes, besides negative prefixes, there are prefixes that indicate repetition (like <span data-no-translation>re-<\/span> in <span data-no-translation>reusable<\/span>), time\/order (like <span data-no-translation>pre-<\/span> in <span data-no-translation>pre-cooked<\/span>), or degree (like <span data-no-translation>super-<\/span> in <span data-no-translation>super-fast<\/span>). However, negative prefixes are among the most common and useful for B2 learners.\"}, {\"q\": \"How can I remember which negative prefix to use?\", \"a\": \"The best way is through consistent exposure and practice. Read a lot, pay attention to new words, and try to use them in your speaking and writing. Flashcards can also be helpful. Remember the basic rules for <span data-no-translation>im-<\/span>, <span data-no-translation>il-<\/span>, <span data-no-translation>ir-<\/span>, and know that <span data-no-translation>un-<\/span> is very common.\"}, {\"q\": \"How are adjectives with negative prefixes useful for B2 exams?\", \"a\": \"For B2 exams, understanding adjectives with negative prefixes is vital for vocabulary sections, reading comprehension, and listening tasks. You might encounter questions where you need to identify antonyms or choose the correct word to complete a sentence, often involving these prefixes. It helps you understand nuanced meanings and improves your overall lexical range.\"}]","rank_math_title":"English B2: Master Adjectives with Negative Prefixes","rank_math_description":"Learn how prefixes like un-, in-, dis- change adjective meanings in English. Improve your B2 vocabulary with clear explanations and examples.","rank_math_focus_keyword":"adjectives with negative prefixes","rank_math_canonical_url":"","footnotes":""},"categories":[588],"tags":[828,649],"class_list":["post-273001","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-b2-upper-intermediate-english","tag-adjectives-with-prefixes","tag-vocabulary"],"_links":{"self":[{"href":"https:\/\/langcom.co.uk\/zh\/wp-json\/wp\/v2\/posts\/273001","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/langcom.co.uk\/zh\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/langcom.co.uk\/zh\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/langcom.co.uk\/zh\/wp-json\/wp\/v2\/users\/192"}],"replies":[{"embeddable":true,"href":"https:\/\/langcom.co.uk\/zh\/wp-json\/wp\/v2\/comments?post=273001"}],"version-history":[{"count":1,"href":"https:\/\/langcom.co.uk\/zh\/wp-json\/wp\/v2\/posts\/273001\/revisions"}],"predecessor-version":[{"id":273679,"href":"https:\/\/langcom.co.uk\/zh\/wp-json\/wp\/v2\/posts\/273001\/revisions\/273679"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/langcom.co.uk\/zh\/wp-json\/wp\/v2\/media\/273678"}],"wp:attachment":[{"href":"https:\/\/langcom.co.uk\/zh\/wp-json\/wp\/v2\/media?parent=273001"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/langcom.co.uk\/zh\/wp-json\/wp\/v2\/categories?post=273001"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/langcom.co.uk\/zh\/wp-json\/wp\/v2\/tags?post=273001"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}