Synonyms|555Antonyms|138|Broader|0Narrower|0Related|315
1
high extent
1
hugely(well, very, greatly, unmistakably, enormously)
1
immeasurably(adverb, absolutely, far, completely, much)
1
immensely(well, very, greatly, enormously, terrifically)
1
in all seriousness(expression, idiom)
1
in earnest
1
in good earnest(expression, idiom)
1
in truth
1
incontestably
1
incontrovertibly
1
indeed
1
indeedy
1
indefatigably(adverb, resolutely)
1
indomitably(adverb, resolutely)
1
inflexibly
1
intensely
1
intently(adverb, resolutely)
1
like a bulldog(expression, idiom)
1
like a leech(expression, idiom)
1
loyally(adverb, resolutely)
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ChicagoSmart Define. 2015. "decidedly thesaurus" https://smartdefine.org/decidedly/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2015, decidedly thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/decidedly/thesaurus/synonyms>.
MLASmart Define. "decidedly thesaurus" 14 April 2015. Web. 22 September 2026. <https://smartdefine.org/decidedly/thesaurus/synonyms>