111 entries under tedious topic. ×

32
dead(adjective, calm, dull, quiet, weak)
30
dull(adjective, calm, weak, simple, tough)
23
spiritless(adjective, dull, weak, excite, sad)
22
flat(adjective, calm, dull, quiet, weak)
19
boring(adjective, dull, quiet, weak, simple)
18
insipid(adjective, dull, weak, stupid, dry)
15
uninteresting(adjective, dull, weak, stupid, dry)
14
dry(adjective, calm, dull, simple, tough)
14
prosaic(adjective, dull, weak, simple, tough)
13
vapid(adjective, dull, weak, simple, flat)
12
tiresome(adjective, dull, stupid, dry, boring)
10
tame(adjective, dull, simple, flat, low)
9
arid(adjective, dull, excite, stupid, dry)
9
drab(adjective, dull, weak, simple, soft)
9
dreary(adjective, dull, dry, boring, routine)
9
jejune(adjective, dull, quiet, weak, flat)
9
lackluster(adjective, dull, weak, simple, flat)
8
bland(adjective, dull, weak, boring, feeble)
8
colorless(adjective, dull, weak, simple, soft)
8
heavy(adjective, dull, quiet, flat, slow)
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APASmart Define. (2015). lifeless thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/lifeless/thesaurus/synonyms
ChicagoSmart Define. 2015. "lifeless thesaurus" https://smartdefine.org/lifeless/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2015, lifeless thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/lifeless/thesaurus/synonyms>.
MLASmart Define. "lifeless thesaurus" 10 April 2015. Web. 23 September 2026. <https://smartdefine.org/lifeless/thesaurus/synonyms>