62 entries under tedious topic. ×

16
exacting(adjective, dull, hard, tough, severe)
14
formidable(adjective, hard, tough, severe, evil)
14
heavy(adjective, dull, hard, tough, severe)
13
abstruse(adjective, hard, obscure, strange, uncertain)
13
exhausting(adjective, dull, hard, tough, awkward)
9
tiring(adjective, dull, tough, awkward, boring)
8
recondite(adjective, hard, fancy, obscure, strange)
7
effortful(adjective, hard, great, tough, rough)
7
fatiguing(adjective, dull, awkward, boring, tired)
7
harsh(adjective, hard, tough, severe, rough)
7
wearisome(adjective, dull, hard, tough, rough)
7
wearying(adjective, dull, awkward, boring, tired)
6
annoying(adjective, dull, rough, boring, painful)
6
irritating(adjective, dull, hard, tough, rough)
5
labored(adjective, hard, great, tough, rough)
4
irksome(adjective, dull, tough, difficulty, heavy)
4
vexatious(adjective, dull, hard, severe, evil)
4
wearing(adjective, dull, hard, tough, awkward)
1
bit much(expression, dull, irritating, exhausting)
1
boresome(adjective, dull, boring, tired)
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APASmart Define. (2016). difficult thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/difficult/thesaurus/synonyms
ChicagoSmart Define. 2016. "difficult thesaurus" https://smartdefine.org/difficult/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2016, difficult thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/difficult/thesaurus/synonyms>.
MLASmart Define. "difficult thesaurus" 24 March 2016. Web. 20 September 2026. <https://smartdefine.org/difficult/thesaurus/synonyms>