1
crisply(adverb, severely)
1
curtly(adverb, severely)
1
cuttingly(adverb, severely)
1
daintily(adverb, fastidiously)
1
dead
1
deliberately(adverb, severely, thoroughly, fully, precisely)
1
demandingly(adverb, severely)
1
dependably(adverb, severely, thoroughly, fully, precisely)
1
diligently(adverb, fastidiously)
1
directly
1
discreetly(adverb, severely, thoroughly, fully, precisely)
1
dryly(adverb, severely)
1
earnestly(adverb, fast, sprightly, seriously, intensely)
1
energetically(adverb, fast, sprightly, seriously, intensely)
1
explicitly(adverb, just, absolutely, completely, quite)
1
exquisitely
1
faultlessly(adverb, just, absolutely, completely, quite)
1
felly
1
ferociously(adverb, fast, sprightly, severely, intensely)
1
flawlessly(adverb, fastidiously)
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APASmart Define. (2015). rigorously thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/rigorously/thesaurus/synonyms
ChicagoSmart Define. 2015. "rigorously thesaurus" https://smartdefine.org/rigorously/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2015, rigorously thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/rigorously/thesaurus/synonyms>.
MLASmart Define. "rigorously thesaurus" 14 April 2015. Web. 22 September 2026. <https://smartdefine.org/rigorously/thesaurus/synonyms>