Synonyms|3.2kAntonyms|1.3k|Broader|61Narrower|58Related|3.9k

225 entries under flat topic. ×

3
addled(adjective, gloomy, dirty, sluggish)
3
dirty(verb, adjective, dark, gloomy)
3
flavorless(adjective, weak, excite, nasty)
3
fuzzy(adjective, obscure, dark, gloomy)
3
impassible(adjective, quiet, heavy, dead)
3
improper(adjective, rough, low, slow)
3
languishing(adjective, weak, weakness, low)
3
limp(adjective, weak, low, sad)
3
lumpy(adjective, quiet, heavy, dead)
3
musty(adjective, set, hard, warm)
3
platitudinous(adjective, set, hard, simple)
3
unsavory(adjective, weak, nasty, unpleasant)
3
unvaried(adjective, stupid, ordinary, boring)
3
washed out(expression, dim, pale, dissolve)
3
watery(adjective, hard, light, weak, soft)
3
worn(adjective, set, beat, weakness)
3
worn-out(adjective, set, hard, silly)
2
achromic(pale, drab, neutral, pallid)
2
broken(adjective, low, sad, indifferent)
2
cast down(verb, expression, adjective, upset, trouble)
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HarvardSmart Define 2016, dull thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/dull/thesaurus/synonyms>.
MLASmart Define. "dull thesaurus" 29 March 2016. Web. 23 September 2026. <https://smartdefine.org/dull/thesaurus/synonyms>