1
operosely
1
oppressively(adverb, difficultly)
1
painfully
1
perseveringly(adverb, vigorously, earnestly, actively, hastily)
1
powerfully
1
promptly(earnestly, enthusiastically, energetically, anxiously, aggressively)
1
rapidly(earnestly, promptly, enthusiastically, energetically, anxiously)
1
resolutely
1
restlessly(vigorously, earnestly, actively, hastily, carefully)
1
robustly
1
roughly(adverb, difficultly)
1
ruggedly(adverb, difficultly)
1
searchingly(adverb, thoroughly, closely, meticulously, determinedly)
1
seriously(vigorously, earnestly, hastily, carefully, eagerly)
1
steadily(adverb, thoroughly, vigorously, closely, strongly)
1
stiffly
1
stoutly
1
stressfully(adverb, difficultly)
1
strong
1
studiously(adverb, vigorously, earnestly, actively, hastily)
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APASmart Define. (2015). strenuously thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/strenuously/thesaurus/synonyms
ChicagoSmart Define. 2015. "strenuously thesaurus" https://smartdefine.org/strenuously/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2015, strenuously thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/strenuously/thesaurus/synonyms>.
MLASmart Define. "strenuously thesaurus" 14 April 2015. Web. 26 September 2026. <https://smartdefine.org/strenuously/thesaurus/synonyms>