46 entries under complex topic. ×

53
arduous(adjective, dull, hard, great, tough)
49
hard(adjective, dull, great, tough, easy)
46
toilsome(adjective, hard, great, tough, difficulty)
45
difficult(adjective, dull, hard, great, tough)
42
operose(adjective, work, hard, tough, severe)
41
tough(adjective, dull, hard, great, easy)
40
burdensome(adjective, dull, hard, tough, severe)
29
backbreaking(adjective, hard, difficult, heavy)
29
taxing(adjective, hard, severe, rough, difficult)
27
ponderous(adjective, hard, difficult, heavy)
27
rough(adjective, hard, great, tough, severe)
27
severe(adjective, hard, tough, rough, difficult)
26
knotty(adjective, hard, severe, rough, difficult)
26
oppressive(adjective, dull, hard, severe, rough)
26
painful(adjective, hard, difficult, agonizing)
26
punishing(adjective, hard, difficult)
26
rugged(adjective, hard, severe, rough, difficult)
26
trying(adjective, dull, hard, tough, severe)
24
complicated(adjective, hard, difficult, awkward)
24
grinding(adjective, hard, difficult, awkward)
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APASmart Define. (2016). laborious thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/laborious/thesaurus/synonyms
ChicagoSmart Define. 2016. "laborious thesaurus" https://smartdefine.org/laborious/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2016, laborious thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/laborious/thesaurus/synonyms>.
MLASmart Define. "laborious thesaurus" 26 February 2016. Web. 22 September 2026. <https://smartdefine.org/laborious/thesaurus/synonyms>