Synonyms|576Antonyms|153|Broader|11Narrower|9Related|1.1k
4
persistent
4
scrupulous
4
steady
4
thorough
4
unflagging(adjective, hardworking)
4
unrelenting
3
awkward(adjective, difficult, heavy, demanding, weighty)
3
boring(adjective, dull, tired, tedious, dreary)
3
bothersome(adjective, tough, severe, difficult, awkward)
3
cantankerous(adjective, difficult)
3
challenging(adjective, great, tough, severe, difficult)
3
critical
3
dense
3
determined
3
dogged
3
exhaustive
3
finicky(adjective, tough, difficult, problematic, trying)
3
laboring(adjective, working)
3
steadfast
3
steep
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APASmart Define. (2016). laborious thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/laborious/thesaurus/synonyms
ChicagoSmart Define. 2016. "laborious thesaurus" https://smartdefine.org/laborious/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2016, laborious thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/laborious/thesaurus/synonyms>.
MLASmart Define. "laborious thesaurus" 26 February 2016. Web. 23 September 2026. <https://smartdefine.org/laborious/thesaurus/synonyms>