56 entries under earnestly topic. ×

10
energetically(adjective, adverb, hard, vigorously)
9
arduously(adverb, badly, severely, vigorously)
9
industriously(adjective, adverb, hard, thoroughly, vigorously)
9
laboriously(adverb, badly, severely, vigorously)
9
vigorously(adjective, adverb, hard, badly, severely)
6
actively(adverb, strongly, promptly, enthusiastically)
6
assiduously(adverb, thoroughly, seriously, vigorously, closely)
6
diligently(adverb, thoroughly, seriously, vigorously, closely)
5
spiritedly(adverb, vigorously, hastily, carefully)
5
zealously(adverb, vigorously, hastily, carefully)
4
ardently(adverb, vigorously, hastily, carefully)
4
indefatigably(adverb, vigorously, actively, hastily)
4
intently(adverb, thoroughly, closely, heartily)
3
briskly(adverb, vigorously, hastily, carefully)
3
eagerly(adverb, vigorously, strongly, hastily)
3
fervently(vigorously, hastily, carefully, eagerly)
3
persistently(adverb, thoroughly, seriously, vigorously, closely)
3
vivaciously(adverb, vigorously, hastily, carefully)
2
animatedly(vigorously, hastily, carefully, eagerly)
2
carefully(badly, severely, vigorously, actively)
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APASmart Define. (2015). strenuously thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/strenuously/thesaurus/synonyms
ChicagoSmart Define. 2015. "strenuously thesaurus" https://smartdefine.org/strenuously/thesaurus/synonyms (accessed September 29, 2026).
HarvardSmart Define 2015, strenuously thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/strenuously/thesaurus/synonyms>.
MLASmart Define. "strenuously thesaurus" 14 April 2015. Web. 29 September 2026. <https://smartdefine.org/strenuously/thesaurus/synonyms>