Synonyms|842Antonyms|195|Broader|5Narrower|0Related|597
1
gravely
1
hammer and tongs(expression, idiom)
1
heart and soul(expression, idiom)
1
heartily
1
honestly(absolutely, very, really, exactly, truly)
1
honorably(absolutely, very, really, exactly, truly)
1
huskily(adverb, strongly)
1
idea
1
immutably
1
imperviously
1
implacably
1
impliably
1
impregnably
1
in actuality(expression, absolutely, really, exactly, sincerely)
1
in all seriousness(expression, idiom)
1
in conjunction with(verb, expression, idiom, adverb, phrasal verb)
1
in earnest
1
in fact(expression, absolutely, very, really, exactly)
1
in good earnest(expression, idiom)
1
in good faith(expression, idiom)
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ChicagoSmart Define. 2015. "firmly thesaurus" https://smartdefine.org/firmly/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2015, firmly thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/firmly/thesaurus/synonyms>.
MLASmart Define. "firmly thesaurus" 14 April 2015. Web. 22 September 2026. <https://smartdefine.org/firmly/thesaurus/synonyms>