27 entries under severely topic. ×

22
solidly(adverb, firm, fast, intensely)
16
securely(adverb, firm, thoroughly, fully)
13
strongly(adverb, fast, intensely, fiercely)
11
rigidly(adverb, strongly, definitely, strictly)
11
tightly(adverb, firm, fast, thoroughly)
11
stiffly(adverb, strongly, definitely, sharply)
9
fast(adjective, adverb, firm, junction)
9
stably(adverb, strongly, definitely, strictly)
7
firm(adverb, fast, thoroughly, intensely)
6
closely(adverb, thoroughly, strongly, carefully)
4
durably(adverb, strongly, definitely, strictly)
4
hard(adjective, adverb, firm, fast, badly)
4
sharply(adverb, hard, fast, badly)
4
solid(adjective, adverb, strongly, definitely)
4
soundly(adverb, firm, thoroughly, strongly)
4
tight(adverb, firm, fast, thoroughly)
2
intensely(adverb, fast, badly, fiercely)
2
rigorously(adverb, fast, badly, intensely)
2
seriously(adverb, fast, badly, intensely)
2
strictly(adverb, hard, badly, thoroughly)
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APASmart Define. (2015). firmly thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/firmly/thesaurus/synonyms
ChicagoSmart Define. 2015. "firmly thesaurus" https://smartdefine.org/firmly/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2015, firmly thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/firmly/thesaurus/synonyms>.
MLASmart Define. "firmly thesaurus" 14 April 2015. Web. 23 September 2026. <https://smartdefine.org/firmly/thesaurus/synonyms>