12
firmly(adverb, firm, fast, severely, fully)
8
completely(adverb, unitedly, altogether)
8
entirely(adverb, absolutely, fully, quite, totally)
6
densely(adverb, densely)
6
stably(adverb, severely, thoroughly, strongly, firmly)
5
compactly(adverb, densely)
5
consistently(adverb, stably, universally, cohesively)
5
fast(adjective, adverb, firm, severely, thoroughly)
5
immovably(adverb, stably)
5
rigidly(adverb, severely, thoroughly, strongly, firmly)
5
securely(adverb, hard, firm, thoroughly, strongly)
5
steadily(adverb, firm, powerfully, strongly, firmly)
4
cohesively(adverb, unitedly, densely, cohesively)
4
hardly
4
heavily(adverb, fast, fully, intensely, fiercely)
4
stiffly(adverb, severely, thoroughly, strongly, firmly)
4
substantially
4
utterly(adverb, absolutely, fully, completely, quite)
3
all
3
close(adverb, fast, intensely, fiercely, violently)
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APASmart Define. (2015). solidly thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/solidly/thesaurus/synonyms
ChicagoSmart Define. 2015. "solidly thesaurus" https://smartdefine.org/solidly/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2015, solidly thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/solidly/thesaurus/synonyms>.
MLASmart Define. "solidly thesaurus" 19 June 2015. Web. 20 September 2026. <https://smartdefine.org/solidly/thesaurus/synonyms>