Synonyms|842Antonyms|195|Broader|5Narrower|0Related|597
1
in reality(expression, absolutely, very, really, exactly)
1
in truth(expression, absolutely, very, really, exactly)
1
indomitably
1
inelastically(adverb, inelastically)
1
inexorably
1
inseparably
1
intemperately
1
intently(adverb, hard, thoroughly, closely, carefully)
1
intimately(adverb, hard, junction, thoroughly, closely)
1
intransigently
1
invariably(adverb, stably)
1
invincibly
1
invulnerably
1
ironhandedly
1
irreconcilably
1
irresistibly
1
jointly(adverb, hard, junction, thoroughly, closely)
1
kinkily
1
legitimately(absolutely, very, really, exactly, truly)
1
like a bulldog(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>