16 entries under firmly topic. ×

15
stiffly(adverb, well, thoroughly, strongly)
8
inflexibly(adverb, thoroughly, strongly, definitely)
6
immovably(adverb, thoroughly, strongly, definitely)
5
solidly(adverb, severely, thoroughly, strongly)
5
tightly(adverb, severely, thoroughly, strongly)
3
securely(adverb, severely, thoroughly, strongly)
2
enduringly(adverb, well, severely, thoroughly, strongly)
2
fixedly(adverb, severely, thoroughly, strongly)
1
durably(adverb, well, severely, thoroughly, strongly)
1
like a rock(expression, idiom, adverb, thoroughly, strongly)
1
motionlessly(adverb, well, severely, thoroughly, strongly)
1
solid(adverb, well, severely, thoroughly, strongly)
1
soundly(adverb, well, severely, thoroughly, strongly)
1
stably(adverb, well, severely, thoroughly, strongly)
1
unflinchingly(adverb, well, severely, thoroughly, strongly)
1
unshakeably(adverb, well, severely, thoroughly, strongly)
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APASmart Define. (2015). rigidly thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/rigidly/thesaurus/synonyms
ChicagoSmart Define. 2015. "rigidly thesaurus" https://smartdefine.org/rigidly/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2015, rigidly thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/rigidly/thesaurus/synonyms>.
MLASmart Define. "rigidly thesaurus" 14 April 2015. Web. 24 September 2026. <https://smartdefine.org/rigidly/thesaurus/synonyms>