133 entries under tedious topic. ×

9
ordinary(adjective, dull, set, simple, plain)
9
trite(adjective, dull, set, hard, simple)
9
unpalatable(adjective, good, dull, weak, nasty)
9
unsavory(adjective, dull, weak, taste, nasty)
7
mundane(adjective, dull, simple, tough, plain)
7
tired(adjective, dull, set, hard, silly)
7
unseasoned(adjective, characteristic, dull, weak, boring)
6
monotone(adjective, dull, dark, gloomy, ordinary)
6
run-of-the-mill(adjective, dull, set, silly, common)
6
stupid(adjective, dull, slow, silly, ordinary)
6
wearying(adjective, dull, boring, dreary)
5
common(noun, adjective, calm, dull, set)
5
dismal(adjective, dull, soft, obscure, dark)
5
hard(adjective, dull, severe, sharp, rough)
5
muted(adjective, dull, quiet, soft, obscure)
5
sapless(adjective, dull, weak, thin, delicate)
5
tiring(adjective, dull, stupid, boring)
5
uninspiring(adjective, dull, weak, simple, plain)
4
draggy(adjective, dull, quiet, low, sad)
4
dusty(adjective, dull, hard, boring)
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APASmart Define. (2016). flat thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/flat/thesaurus/synonyms
ChicagoSmart Define. 2016. "flat thesaurus" https://smartdefine.org/flat/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2016, flat thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/flat/thesaurus/synonyms>.
MLASmart Define. "flat thesaurus" 1 March 2016. Web. 21 September 2026. <https://smartdefine.org/flat/thesaurus/synonyms>