203 entries under adverb topic. ×

4
forcibly(fast, fully, intensely, fiercely)
4
hard(adjective, firm, fast, badly)
4
heavily(fast, fully, intensely, fiercely)
4
mightily
4
obstinately
4
robustly
4
sharply(hard, fast, badly, severely)
4
solid(adjective, severely, strongly, definitely)
4
soundly(firm, severely, thoroughly, strongly)
4
stalwartly(powerfully, faithfully, steadfastly, loyally)
4
staunchly
4
steady(adjective, firm)
4
sternly
4
surely(absolutely, very, really, exactly)
4
tight(firm, fast, severely, thoroughly)
4
toughly
4
unalterably
4
unchangeably
4
unswervingly
2
approximately(hard, thoroughly, closely, carefully)
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APASmart Define. (2015). firmly thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/firmly/thesaurus/synonyms
ChicagoSmart Define. 2015. "firmly thesaurus" https://smartdefine.org/firmly/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2015, firmly thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/firmly/thesaurus/synonyms>.
MLASmart Define. "firmly thesaurus" 14 April 2015. Web. 26 September 2026. <https://smartdefine.org/firmly/thesaurus/synonyms>