269 entries under adjective topic. ×

4
ashy(pale, white, colorless)
4
dingy(dull, dark, gloomy, faint)
4
dry(dull, simple, flat, excite)
4
faint(dull, mean, weak, thin)
4
leaden(dull, lifeless)
4
muddy
4
muted(dull, dark, gloomy, faint)
4
obscure(dull, dim, lifeless)
4
pallid(mean, weak, thin, ill)
4
somber(blue, sad, depression, woe)
4
spiritless(dull, excite, sad, boring)
4
tedious(dull, simple, flat, plain)
4
toneless
4
unimaginative(dull, simple, excite, plain)
3
blah(dull, simple, flat, low)
3
blind(dull, lifeless)
3
expressionless
3
gloomy(dull, blue, sad, dark)
3
hueless
3
insipid(dull, weak, dry, boring)
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APASmart Define. (2015). lackluster thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/lackluster/thesaurus/synonyms
ChicagoSmart Define. 2015. "lackluster thesaurus" https://smartdefine.org/lackluster/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2015, lackluster thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/lackluster/thesaurus/synonyms>.
MLASmart Define. "lackluster thesaurus" 10 April 2015. Web. 26 September 2026. <https://smartdefine.org/lackluster/thesaurus/synonyms>