Synonyms|384Antonyms|46|Broader|0Narrower|0Related|136
1
for a fact(expression, idiom, adverb, just, absolutely)
1
for certain(expression, adverb, just, absolutely, completely)
1
for sure
1
forcibly(adverb, fast, sprightly, severely, seriously)
1
frantically(adverb, fast, sprightly, severely, seriously)
1
frostily(adverb, severely)
1
fully(adverb, severely, thoroughly, precisely, correctly)
1
fundamentally(adverb, severely)
1
gingerly(adverb, severely, thoroughly, fully, precisely)
1
gravely
1
guardedly(adverb, severely, thoroughly, fully, precisely)
1
hard(adverb, fast, badly, severely, thoroughly)
1
heavily(adverb, fast, sprightly, severely, seriously)
1
heedfully(adverb, severely, thoroughly, fully, precisely)
1
honorably(adverb, severely, thoroughly, fully, precisely)
1
hypercritically(adverb, fastidiously)
1
icily(adverb, severely)
1
immovably
1
immutably
1
imperially(adverb, severely)
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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>