Synonyms|201Antonyms|74|Broader|0Narrower|1Related|832
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runty
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sediment starved(expression, idiom)
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serrate
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serrated
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skin-and-bone(thin, lean, undernourished, underfed)
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skin-and-bones(skinny, gaunt, lanky)
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spectral
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squat
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starved-looking
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starving(undernourished, underfed)
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stringbean(adjective, thin)
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tenuous
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thin person(expression, idiom)
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thinner
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tightfitting
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under-size
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undergrowths
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unfed
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unhealthily thin(expression, skinny, gaunt, lanky)
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unnourished
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APASmart Define. (2015). underweight thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/underweight/thesaurus/synonyms
ChicagoSmart Define. 2015. "underweight thesaurus" https://smartdefine.org/underweight/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2015, underweight thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/underweight/thesaurus/synonyms>.
MLASmart Define. "underweight thesaurus" 10 April 2015. Web. 23 September 2026. <https://smartdefine.org/underweight/thesaurus/synonyms>