Synonyms|423Antonyms|63|Broader|12Narrower|17Related|196
-1
concave
-1
debilitation
-1
decline
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APASmart Define. (2015). protuberance thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/protuberance/thesaurus/antonyms
ChicagoSmart Define. 2015. "protuberance thesaurus" https://smartdefine.org/protuberance/thesaurus/antonyms (accessed September 22, 2026).
HarvardSmart Define 2015, protuberance thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/protuberance/thesaurus/antonyms>.
MLASmart Define. "protuberance thesaurus" 10 April 2015. Web. 22 September 2026. <https://smartdefine.org/protuberance/thesaurus/antonyms>