3
inexorably
3
obdurately
3
obstinately(adverb, obstinately)
3
relentlessly
3
resolutely(adverb, obstinately)
3
securely(adverb, severely, thoroughly, strongly, firmly)
3
unchangeably(adverb, unalterably)
2
absolutely
2
bang
2
callously
2
enduringly(adverb, well, severely, thoroughly, strongly)
2
even
2
fixedly(adverb, severely, thoroughly, strongly, firmly)
2
hardheadedly(adverb, obstinately)
2
harshly
2
in all respects(expression, idiom)
2
just
2
starkly
2
statically
2
steadfastly
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APASmart Define. (2015). rigidly thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/rigidly/thesaurus/synonyms
ChicagoSmart Define. 2015. "rigidly thesaurus" https://smartdefine.org/rigidly/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2015, rigidly thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/rigidly/thesaurus/synonyms>.
MLASmart Define. "rigidly thesaurus" 14 April 2015. Web. 21 September 2026. <https://smartdefine.org/rigidly/thesaurus/synonyms>