133 entries under tedious topic. ×

4
irksome(adjective, dull, simple, plain, stupid)
4
routine(adjective, dull, quiet, set, weak)
4
soporific(adjective, dull, ordinary, dry, boring)
4
stock(adjective, dull, set, silly, common)
4
toneless(adjective, dull, cool, detached, boring)
3
deadly(adjective, dry, boring, monotonous)
3
exhausting(adjective, dull, boring, irritating)
3
fatiguing(adjective, dull, boring, dreary)
3
hackneyed(adjective, dull, set, hard, simple)
3
ho hum(expression, adjective, dull, weak, plain)
3
milk-and-water(adjective, dull, weak, plain, mild)
3
repetitious(adjective, dull, hard, stupid, ordinary)
3
repetitive(adjective, dull, ordinary, dry, boring)
3
unrelieved(adjective, dull, informal, big, boring)
3
vanilla(adjective, dull, weak, smooth, simple)
2
bromidic(adjective, dull, set, silly, common)
2
dull as dishwater(expression, adjective, idiom, dull, weak)
2
jading(adjective, dull, boring, irritating)
2
mind-numbing(adjective, dull, dry, boring)
2
moth-eaten(adjective, dull, set, hard, silly)
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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>