Synonyms|156Antonyms|40|Broader|2Narrower|0Related|209
3
immutable
2
endless
2
faithful
2
fixed
2
frequent
2
inapt
2
incapable
1
constant
1
continual
0
invariable
0
incessant
0
incompetent
0
inept
0
inexperienced
0
inexpert
0
lasting
0
limited
0
loyal
0
perpetual
0
resolute
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APASmart Define. (2015). protean thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/protean/thesaurus/antonyms
ChicagoSmart Define. 2015. "protean thesaurus" https://smartdefine.org/protean/thesaurus/antonyms (accessed September 22, 2026).
HarvardSmart Define 2015, protean thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/protean/thesaurus/antonyms>.
MLASmart Define. "protean thesaurus" 14 April 2015. Web. 22 September 2026. <https://smartdefine.org/protean/thesaurus/antonyms>