Synonyms|576Antonyms|153|Broader|11Narrower|9Related|1.1k
2
impenetrable
2
irritating(adjective, dull, tough, severe, boring)
2
killing
2
knockout
2
lumbering
2
mean(adjective, hard, severe, rough, difficult)
2
methodical
2
meticulous
2
no picnic(expression, tough, severe, rough, difficult)
2
obdurate
2
obstinate
2
occupied
2
overweight
2
overworked
2
relentless
2
showy
2
slavish(adjective, tough, rough, difficult, heavy)
2
slow(adjective, dull, boring, dreary, annoying)
2
sonorous
2
sound
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APASmart Define. (2016). laborious thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/laborious/thesaurus/synonyms
ChicagoSmart Define. 2016. "laborious thesaurus" https://smartdefine.org/laborious/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2016, laborious thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/laborious/thesaurus/synonyms>.
MLASmart Define. "laborious thesaurus" 26 February 2016. Web. 24 September 2026. <https://smartdefine.org/laborious/thesaurus/synonyms>