{"id":349,"date":"2025-07-04T12:08:20","date_gmt":"2025-07-04T09:08:20","guid":{"rendered":"https:\/\/fixygrammar.com\/blog\/?p=349"},"modified":"2025-07-29T11:56:14","modified_gmt":"2025-07-29T08:56:14","slug":"relative-clauses-defining-vs-non-defining","status":"publish","type":"post","link":"https:\/\/fixygrammar.com\/blog\/relative-clauses-defining-vs-non-defining","title":{"rendered":"Defining vs. Non-Defining Clauses: Easy Guide + Examples"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">If English sentences were IKEA furniture, relative clauses would be the little screws that hold the whole thing together. You don\u2019t always see them, but if they\u2019re missing, your sentence collapses into confusion.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large is-resized\"><img fetchpriority=\"high\" decoding=\"async\" width=\"1024\" height=\"683\" src=\"https:\/\/fixygrammar.com\/blog\/wp-content\/uploads\/2025\/07\/defining-vs.-non-defining-relative-clauses-1024x683.png\" alt=\"\" class=\"wp-image-350\" style=\"width:331px;height:auto\" srcset=\"https:\/\/fixygrammar.com\/blog\/wp-content\/uploads\/2025\/07\/defining-vs.-non-defining-relative-clauses-1024x683.png 1024w, https:\/\/fixygrammar.com\/blog\/wp-content\/uploads\/2025\/07\/defining-vs.-non-defining-relative-clauses-300x200.png 300w, https:\/\/fixygrammar.com\/blog\/wp-content\/uploads\/2025\/07\/defining-vs.-non-defining-relative-clauses-768x512.png 768w, https:\/\/fixygrammar.com\/blog\/wp-content\/uploads\/2025\/07\/defining-vs.-non-defining-relative-clauses-930x620.png 930w, https:\/\/fixygrammar.com\/blog\/wp-content\/uploads\/2025\/07\/defining-vs.-non-defining-relative-clauses.png 1536w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n<\/div>\n\n\n<p class=\"wp-block-paragraph\">So today we\u2019re talking about <strong>defining vs. non-defining relative clauses<\/strong>, a tragically boring phrase that actually hides one of the most important distinctions in English grammar. If you\u2019ve ever wondered when to use <em>who<\/em>, <em>which<\/em>, or <em>that<\/em>\u2014and why your commas are giving you side-eye\u2014this guide is your mildly sarcastic savior.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">What Are Relative Clauses and Why Do They Matter?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Relative clauses modify nouns by adding information. They begin with <strong>relative pronouns<\/strong> (<em>who<\/em>, <em>which<\/em>, <em>that<\/em>) and act like mini-adjectives. In <strong>English grammar<\/strong>, they help avoid choppy sentences and repetitions.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">For example:<br>\u201cThe person who microwaves fish in the office is banned.\u201d<br>That clause (<em>who microwaves fish\u2026<\/em>) tells us exactly which monster we\u2019re talking about.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Still not clear? Don\u2019t panic. Try this: <a class=\"\" href=\"https:\/\/fixygrammar.com\/blog\/simple-sentences-in-english\">simple sentences in English<\/a>. Start small, dream big. Or, for an external brain hug, you can read the <a href=\"https:\/\/www.oxfordlearnersdictionaries.com\/grammar\/relative-clauses\">Oxford Learner\u2019s Dictionary explanation of relative clauses<\/a> for another perspective.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Defining Relative Clauses: The Information You Can\u2019t Skip<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">A defining relative clause is basically your sentence saying: \u201cYou need this info, or you won\u2019t understand anything.\u201d These clauses are essential. Like coffee. Or wi-fi. And no, you do <em>not<\/em> get to use commas here.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large is-resized\"><img decoding=\"async\" width=\"1024\" height=\"1024\" src=\"https:\/\/fixygrammar.com\/blog\/wp-content\/uploads\/2025\/07\/defining-relative-clause-sentence-comparison-1024x1024.png\" alt=\"\" class=\"wp-image-351\" style=\"width:425px;height:auto\" srcset=\"https:\/\/fixygrammar.com\/blog\/wp-content\/uploads\/2025\/07\/defining-relative-clause-sentence-comparison-1024x1024.png 1024w, https:\/\/fixygrammar.com\/blog\/wp-content\/uploads\/2025\/07\/defining-relative-clause-sentence-comparison-300x300.png 300w, https:\/\/fixygrammar.com\/blog\/wp-content\/uploads\/2025\/07\/defining-relative-clause-sentence-comparison-150x150.png 150w, https:\/\/fixygrammar.com\/blog\/wp-content\/uploads\/2025\/07\/defining-relative-clause-sentence-comparison-768x768.png 768w, https:\/\/fixygrammar.com\/blog\/wp-content\/uploads\/2025\/07\/defining-relative-clause-sentence-comparison-1536x1536.png 1536w, https:\/\/fixygrammar.com\/blog\/wp-content\/uploads\/2025\/07\/defining-relative-clause-sentence-comparison.png 2048w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n<\/div>\n\n\n<p class=\"wp-block-paragraph\">Use:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><em>who<\/em> for humans<\/li>\n\n\n\n<li><em>which<\/em> or <em>that<\/em> for things<\/li>\n\n\n\n<li><em>that<\/em> for when you\u2019re feeling casual (but only in defining clauses, don\u2019t get cocky)<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Examples:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u201cPeople who leave dirty dishes in the sink are the worst.\u201d<\/li>\n\n\n\n<li>\u201cBooks that have dragons are better than books that don\u2019t.\u201d<\/li>\n\n\n\n<li>\u201cThe laptop which crashed during my presentation is now in a lake.\u201d<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Want to see how this kind of sentence compares to others? Dive into <a class=\"\" href=\"https:\/\/fixygrammar.com\/blog\/passive-voice-vs-active-voice-when-and-why-to-use\">active vs. passive voice<\/a> to keep your sentence muscles toned.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Non-Defining Relative Clauses: Optional, but Still Judging You<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">This is the extra info\u2014like that friend who adds unnecessary details to every story. These clauses aren\u2019t essential to the meaning, so they always come with commas. Think of the commas as little arms giving you a side-hug: \u201cHey, this part isn\u2019t crucial, but I\u2019m still here.\u201d<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Only use <em>who<\/em> or <em>which<\/em>\u2014<em>that<\/em> is absolutely not invited. Don\u2019t argue. Grammar said so.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Examples:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u201cMy neighbor, who owns eight cats, is surprisingly normal.\u201d<\/li>\n\n\n\n<li>\u201cThe Eiffel Tower, which sparkles at night, is a huge tourist magnet.\u201d<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">If you\u2019re wondering whether you\u2019re using commas right, you\u2019re probably not. Fix it with our guide on <a class=\"\" href=\"https:\/\/fixygrammar.com\/blog\/comma-rules-professional-emails\">comma rules in professional emails<\/a>, because your punctuation deserves better.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">And hey, if you want to see what the Brits have to say about it, check out the <a href=\"https:\/\/dictionary.cambridge.org\/grammar\/british-grammar\/defining-and-non-defining-defining-relative-clauses\">Cambridge Grammar Guide on Relative Clauses<\/a>.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Defining vs. Non-Defining Clauses: Key Differences Explained<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Let\u2019s break it down like it\u2019s middle school gym class:<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>Feature<\/th><th>Defining Clause<\/th><th>Non-defining Clause<\/th><\/tr><\/thead><tbody><tr><td>Are commas invited?<\/td><td>Absolutely not<\/td><td>Yes, both sides please<\/td><\/tr><tr><td>Pronouns allowed<\/td><td>who \/ which \/ that<\/td><td>who \/ which (never <em>that<\/em>)<\/td><\/tr><tr><td>Meaning if removed?<\/td><td>Sentence breaks down<\/td><td>Sentence still works<\/td><\/tr><tr><td>Tone<\/td><td>Essential, informative<\/td><td>Decorative, gossipy<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Common Mistakes with Relative Clauses (And How to Stop Making Them)<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Using <em>that<\/em> in non-defining clauses (grammar rage level: high)<\/li>\n\n\n\n<li>Dropping commas like you&#8217;re in a hurry<\/li>\n\n\n\n<li>Confusing <em>which<\/em> and <em>that<\/em> because you think they\u2019re interchangeable (they\u2019re not; stop it)<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">For a parade of other mishaps, visit <a href=\"https:\/\/fixygrammar.com\/blog\/common-grammar-mistakes\">common grammar mistakes<\/a>. It\u2019s a fun way to feel better about yourself.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Quick Grammar Tips to Master Relative Clauses Without Crying<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">If you made it this far, congratulations\u2014you now understand why commas exist and when <em>that<\/em> is not your friend. Mastering <strong>defining vs. non-defining relative clauses<\/strong> will make your writing clearer, sharper, and way less annoying.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">If you\u2019re still unsure, let Cambridge pat your head with their explanation of <a href=\"https:\/\/dictionary.cambridge.org\/grammar\/british-grammar\/defining-and-non-defining-defining-relative-clauses\">relative clauses<\/a>. Or double up with <a href=\"https:\/\/www.oxfordlearnersdictionaries.com\/grammar\/relative-clauses\">Oxford&#8217;s version<\/a> if you like collecting grammar guides like Pok\u00e9mon cards.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Still hungry? Munch on more grammar deliciousness with <a class=\"\" href=\"https:\/\/fixygrammar.com\/blog\/understanding-simple-sentences-definition-and-examples\">understanding simple sentences<\/a> or test your skills with our very useful <a class=\"\" href=\"https:\/\/fixygrammar.com\/paraphraser\">paraphraser tool<\/a>. Or be reckless and just binge-read our <a class=\"\" href=\"https:\/\/fixygrammar.com\/blog\/\">full blog archive<\/a>. Go ahead, impress yourself.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u2753 <strong>FAQ: Defining and Non-Defining Relative Clauses<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>1. What is a relative clause in English grammar?<\/strong><br>A relative clause is a part of a sentence that gives more information about a noun. It starts with words like <em>who<\/em>, <em>which<\/em>, or <em>that<\/em>, and works like a mini-adjective. Without it, your sentence might sound like it forgot its wallet.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>2. How can I tell if a relative clause is defining or non-defining?<\/strong><br>Simple test: If removing the clause changes the meaning of the sentence, it&#8217;s <strong>defining<\/strong>. If the sentence still makes sense without it, it&#8217;s <strong>non-defining<\/strong>. Also, non-defining clauses come with commas\u2014like little grammar air quotes.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>3. Can I use \u201cthat\u201d in non-defining relative clauses?<\/strong><br>No. Grammar says no. And grammar is like your very strict aunt\u2014it doesn\u2019t care how casual you feel. Use <em>who<\/em> or <em>which<\/em> for non-defining clauses. <em>That<\/em> is for defining clauses only.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>4. Do all relative clauses need commas?<\/strong><br>Only <strong>non-defining<\/strong> relative clauses use commas. <strong>Defining<\/strong> ones do not. If you throw commas around randomly, you\u2019re not just wrong\u2014you\u2019re inviting confusion. Possibly lawsuits. (Just kidding. Mostly.)<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>5. Are relative clauses important in writing?<\/strong><br>Yes\u2014unless you enjoy sounding like a robot with a sentence generator. They help combine ideas, reduce repetition, and make your writing less painful to read.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>6. What&#8217;s the biggest mistake people make with relative clauses?<\/strong><br>Besides not using them at all? Mixing up <em>that<\/em> and <em>which<\/em>, or forgetting commas in non-defining clauses. Bonus fail: using \u201cthat\u201d in a non-defining clause and triggering every grammar purist on the internet.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>If English sentences were IKEA furniture, relative clauses would be the little screws that hold the whole thing together. You don\u2019t always see them, but if they\u2019re missing, your sentence collapses into confusion. So today we\u2019re talking about defining vs. non-defining relative clauses, a tragically boring phrase that actually hides one of the most important&hellip;&nbsp;<a href=\"https:\/\/fixygrammar.com\/blog\/relative-clauses-defining-vs-non-defining\" rel=\"bookmark\"><span class=\"screen-reader-text\">Defining vs. Non-Defining Clauses: Easy Guide + Examples<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"neve_meta_sidebar":"","neve_meta_container":"","neve_meta_enable_content_width":"","neve_meta_content_width":0,"neve_meta_title_alignment":"","neve_meta_author_avatar":"","neve_post_elements_order":"","neve_meta_disable_header":"","neve_meta_disable_footer":"","neve_meta_disable_title":"","footnotes":""},"categories":[1],"tags":[],"class_list":["post-349","post","type-post","status-publish","format-standard","hentry","category-genel"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.8.1 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Defining vs. Non-Defining Clauses: Easy Guide + Examples -<\/title>\n<meta name=\"description\" content=\"What are defining and non-defining relative clauses? 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