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Antonyms
Fill out

Meaning Synonyms Antonyms Rhymes Sentences Translate Word Type Pronunciation Word Forms

Fill out

/fɪl ˈaʊt/

Tone: "Fill out" sits comfortably in both formal and informal writing. There are no strong register constraints; choose it when it fits the meaning rather than for stylistic effect.

Usage: Use "fill out" as a verb when you mean to become round, plump, or shapely. It works well in active constructions where the subject is clearly the agent of the action.

Antonyms for "fill out" (1 found)

Noun(1 words)

thin out

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Source note: This entry is assembled from open lexical datasets and WordToolSet editorial checks. See our data sources and editorial policy. Last reviewed May 2026.

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