Antonyms for "thin"
4 kid-friendly opposites of thin, perfect for writing and vocabulary work.
What does "thin" mean?
not thick Knowing the antonyms of thin helps kids write comparison sentences and understand contrast in stories.
🦓 Opposite words for thin
Click any antonym to look it up:
How to use antonyms in writing
Antonyms are powerful in three writing situations:
1. Contrast sentences — "The room was thin, but the hallway was thick." Comparing opposites makes descriptions vivid.
2. Character development — Two characters with opposite traits (one thin, one thick) create natural tension in a story.
3. Editing for variety — If you've used thin three times in a paragraph, swap one for an antonym to vary your writing.
FAQ — antonyms for thin
What is the opposite of thin?
The most common antonym for thin is thick. Other opposites include fat, wide, bulky.
Are there different antonyms for thin at different grade levels?
Yes — younger kids learn the simplest opposite first (thick). Older students can pick more precise antonyms depending on context.
What is a synonym for thin?
A common K-2 synonym is skinny. See the full synonyms page →
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