4
sedulously
3
briskly(adverb, vigorously, earnestly, hastily, carefully)
3
dynamically
3
eagerly(adverb, vigorously, earnestly, strongly, hastily)
3
earnestly(adverb, vigorously, hastily, carefully, enthusiastically)
3
fervently(vigorously, earnestly, hastily, carefully, eagerly)
3
heartily
3
intensively(adverb, thoroughly, closely, meticulously, determinedly)
3
keenly
3
lustily
3
onerously(adverb, difficultly)
3
persistently(adverb, thoroughly, seriously, vigorously, closely)
3
severely(adverb, difficultly)
3
tirelessly
3
toilsomely(adverb, difficultly)
3
toughly(adverb, difficultly)
3
vivaciously(adverb, vigorously, earnestly, hastily, carefully)
3
with difficulty(expression, idiom)
2
animatedly(vigorously, earnestly, hastily, carefully, eagerly)
2
carefully(badly, severely, vigorously, earnestly, actively)
11 years ago|4k views|share |citing 
APASmart Define. (2015). strenuously thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/strenuously/thesaurus/synonyms
ChicagoSmart Define. 2015. "strenuously thesaurus" https://smartdefine.org/strenuously/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2015, strenuously thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/strenuously/thesaurus/synonyms>.
MLASmart Define. "strenuously thesaurus" 14 April 2015. Web. 25 September 2026. <https://smartdefine.org/strenuously/thesaurus/synonyms>