4
etiolated(beat, weak, feeble, exhausted, lackluster)
4
feeble(adjective, dull, light, weak, soft)
4
gray(adjective, dull, light, soft, poor)
4
run-of-the-mill(adjective, flat, common, ordinary, dry)
4
sterile(adjective, dull, excite, boring, uninteresting)
4
stodgy(adjective, dull, flat, excite, stupid)
4
transparent(neutral, uncolored, uncoloured)
4
washed out(verb, expression, adjective, phrasal verb, pale)
3
achromic(adjective, pale, neutral, pallid, hue)
3
bald
3
blah(adjective, dull, weak, simple, flat)
3
dead(adjective, dull, weak, simple, soft)
3
doughy(adjective, dull, light, soft, poor)
3
fair(adjective, dull, light, cool, cold)
3
hackneyed(adjective, mean, simple, flat, poor)
3
ho-hum(adjective, dull, simple, flat, clean)
3
matter-of-fact(adjective, excite)
3
mousy(adjective, quiet, drab)
3
mundane(adjective, dull, simple, plain, common)
3
sickly(adjective, dull, light, weak, soft)
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APASmart Define. (2016). colorless thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/colorless/thesaurus/synonyms
ChicagoSmart Define. 2016. "colorless thesaurus" https://smartdefine.org/colorless/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2016, colorless thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/colorless/thesaurus/synonyms>.
MLASmart Define. "colorless thesaurus" 23 March 2016. Web. 24 September 2026. <https://smartdefine.org/colorless/thesaurus/synonyms>