50 entries under exhausting topic. ×

4
irksome(adjective, dull, difficulty, difficult, awkward)
2
humdrum(adjective, dull, boring, tedious, dreary)
2
irritating(adjective, dull, tough, severe, boring)
2
mean(adjective, hard, severe, rough, difficult)
2
slavish(adjective, tough, rough, difficult, heavy)
2
slow(adjective, dull, boring, dreary, annoying)
2
unsparing(adjective, tough, rough, difficult, heavy)
2
vexatious(adjective, dull, difficult, tender, boring)
1
annoying(adjective, dull, boring, tedious, dreary)
1
bit much(expression, dull, tedious, irritating)
1
boresome(adjective, dull, boring, tired, tedious)
1
dragging(adjective, dull, boring, tired, tedious)
1
drudging(adjective, dull, boring, tedious, dreary)
1
endless(adjective, dull, boring, dreary, monotonous)
1
enervating(adjective, dull, boring, dreary, monotonous)
1
enervative(adjective, dull, boring, tired, tedious)
1
exasperating(adjective, dull, boring, tired, tedious)
1
jading(adjective, dull, boring, tired, tedious)
1
nowhere(adjective, dull, boring, tedious, irritating)
1
tired(adjective, dull, boring, tedious, irritating)
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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>