8
bloodless(adjective, dull, light, weak, soft)
8
characterless(adjective, dull, mean, rough, poor)
8
dreary(adjective, dull, flat, gloomy, dirty)
8
insipid(adjective, dull, light, weak, soft)
8
livid(adjective, dull, light, weak, soft)
8
lusterless(adjective, dull, beat, weak, simple)
8
monotonous(adjective, dull, weak, simple, flat)
8
pedestrian(adjective, dull, mean, simple, rough)
8
prosy(adjective, dull, mean, weak, simple)
8
vapid(adjective, dull, weak, simple, flat)
8
wan(verb, adjective, dull, light, weak)
7
arid(adjective, dull, flat, excite, stupid)
7
ashy(adjective, dull, light, soft, poor)
7
dry(adjective, dull, simple, flat, excite)
7
lurid(adjective, dull, light, soft, poor)
7
waxen(adjective, dull, light, soft, poor)
6
dingy(adjective, tacky, soiled)
6
hueless
6
jejune(adjective, dull, weak, flat, ordinary)
6
lacklustre(dull, pale, lifeless, lackluster, ashen)
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APASmart Define. (2016). colorless thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/colorless/thesaurus/synonyms
ChicagoSmart Define. 2016. "colorless thesaurus" https://smartdefine.org/colorless/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2016, colorless thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/colorless/thesaurus/synonyms>.
MLASmart Define. "colorless thesaurus" 23 March 2016. Web. 23 September 2026. <https://smartdefine.org/colorless/thesaurus/synonyms>