Synonyms|797Antonyms|170|Broader|4Narrower|1Related|1k
1
firm
1
fixed
1
hard
1
immutable
1
invariable
1
lasting
1
normal
1
permanent
1
persistent
1
predictable(adjective, certain, sure)
1
settled
1
strong
1
true
1
trustworthy
1
trusty
1
unperturbable(adjective, certain, sure)
0
abstracted
0
addled
0
airless
0
apathetic
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APASmart Define. (2015). mercurial thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/mercurial/thesaurus/antonyms
ChicagoSmart Define. 2015. "mercurial thesaurus" https://smartdefine.org/mercurial/thesaurus/antonyms (accessed September 29, 2026).
HarvardSmart Define 2015, mercurial thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/mercurial/thesaurus/antonyms>.
MLASmart Define. "mercurial thesaurus" 13 April 2015. Web. 29 September 2026. <https://smartdefine.org/mercurial/thesaurus/antonyms>