5
angular(adjective, dull, slight, thin, delicate)
5
boney
5
feathery(adjective, feature, characteristic, light, weight)
5
meager(adjective, dull, slight, thin, delicate)
5
puny(adjective, dull, light, slight, fine)
5
spindly(adjective, dull, light, slight, fine)
5
twiggy(adjective, dull, light, slight, fine)
5
weightless(adjective, feature, characteristic, light, weight)
4
featherlight(adjective, feature, characteristic, light, weight)
4
pinched(adjective, dull, light, slight, fine)
4
rawboned(dull, light, slight, fine, thin)
4
starved(adjective, dull, light, slight, fine)
4
undernourished(adjective, light, slight, thin, delicate)
3
cadaverous(adjective, dull, light, slight, fine)
3
haggard(adjective, dull, light, slight, fine)
3
meagre
3
shadow(adjective, dull, light, slight, fine)
3
slender(adjective, dull, slight, thin, delicate)
3
slim(adjective, dull, light, slight, fine)
3
wasted(adjective, dull, light, slight, fine)
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APASmart Define. (2015). underweight thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/underweight/thesaurus/synonyms
ChicagoSmart Define. 2015. "underweight thesaurus" https://smartdefine.org/underweight/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2015, underweight thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/underweight/thesaurus/synonyms>.
MLASmart Define. "underweight thesaurus" 10 April 2015. Web. 21 September 2026. <https://smartdefine.org/underweight/thesaurus/synonyms>