87 entries under plain topic. ×

39
dull(adjective, hard, weak, simple, flat)
22
boring(adjective, dull, weak, simple, flat)
13
flat(adjective, dull, hard, simple, soft)
11
monotonous(adjective, dull, weak, simple)
11
prosaic(adjective, dull, weak, simple, flat)
11
tedious(adjective, dull, weak, simple)
9
lifeless(adjective, dull, weak, simple, soft)
9
humdrum(adjective, dull, simple, clean)
9
lackluster(adjective, dull, simple, blue, excite)
9
vapid(adjective, dull, weak, simple, flat)
8
colorless(adjective, dull, weak, simple, soft)
8
dry(adjective, dull, hard, simple, flat)
6
dead(adjective, dull, hard, weak, simple)
5
lusterless(adjective, dull, simple, flat, excite)
5
prosy(adjective, dull, weak, simple)
4
blah(adjective, dull, weak, simple, flat)
4
ordinary(adjective, dull, simple, common)
4
unsightly(adjective, unpleasant, ugly, pretty)
3
commonplace(adjective, dull, hard, simple)
3
frowzy(adjective, shabby, dingy, unfashionable)
10 years ago|21k views|share |citing 
APASmart Define. (2016). drab thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/drab/thesaurus/synonyms
ChicagoSmart Define. 2016. "drab thesaurus" https://smartdefine.org/drab/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2016, drab thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/drab/thesaurus/synonyms>.
MLASmart Define. "drab thesaurus" 29 March 2016. Web. 22 September 2026. <https://smartdefine.org/drab/thesaurus/synonyms>