57 entries under vigorously topic. ×

11
arduously(adverb, easy, badly, severely)
9
strenuously(adverb, badly, severely, earnestly)
8
industriously(adverb, earnestly, actively, hastily)
7
toilsomely(adverb, badly, severely, hardly)
6
assiduously(adverb, thoroughly, earnestly, hastily)
6
diligently(adverb, earnestly, actively, hastily)
5
hardly(adverb, badly, severely, extremely)
5
indefatigably(adverb, earnestly, actively, hastily)
4
painfully(adverb, badly, severely, disturbingly)
4
with difficulty(expression, idiom, adverb, badly, severely)
4
ardently(adverb, earnestly, actively, hastily)
4
awkwardly(adverb, badly, severely, hardly)
4
burdensomely(adverb, hard, badly, severely)
3
energetically(adverb, earnestly, hastily, carefully)
3
harshly(adverb, badly, severely, hardly)
3
inconveniently(adverb, badly, severely, hardly)
3
painstakingly(adverb, thoroughly, earnestly, hastily)
3
zealously(adverb, earnestly, actively, hastily)
2
carefully(adverb, badly, severely, earnestly)
2
exhaustingly(adverb, hard, badly, severely)
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APASmart Define. (2016). laboriously thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/laboriously/thesaurus/synonyms
ChicagoSmart Define. 2016. "laboriously thesaurus" https://smartdefine.org/laboriously/thesaurus/synonyms (accessed September 27, 2026).
HarvardSmart Define 2016, laboriously thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/laboriously/thesaurus/synonyms>.
MLASmart Define. "laboriously thesaurus" 19 February 2016. Web. 27 September 2026. <https://smartdefine.org/laboriously/thesaurus/synonyms>