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

144 entries under plain topic. ×

3
out-of-date(adjective, hard, dry, boring)
3
platitudinous(adjective, set, hard, simple, flat)
3
square(adjective, simple, sharp, ordinary)
3
watery(adjective, hard, light, weak, soft)
2
austere(adjective, simple, severe, unhappy)
2
awful(adjective, unpleasant, ugly, unattractive)
2
factual(adjective, simple, tough, ordinary)
2
fair(mean, simple, inferior, ordinary)
2
foul(adjective, flat, rough, low)
2
grotesque(adjective, unpleasant, common, usual)
2
hideous(adjective, unpleasant, common, usual)
2
ho hum(expression, adjective, weak, mild)
2
horrid(gloomy, miserable, ugly, unattractive)
2
mild(adjective, quiet, weak, kind, soft)
2
modest(adjective, mean, simple, pure)
2
no great shakes(expression, adjective, idiom, mean)
2
nothing(adjective, weak, simple, flat)
2
nowhere(adjective, weak, simple, flat)
2
quotidian(adjective, simple, pure, common)
2
repugnant(adjective, nasty, unpleasant, disagreeable)
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HarvardSmart Define 2016, dull thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/dull/thesaurus/synonyms>.
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