201 entries under quiet topic. ×

16
soporific(noun, adjective, dry, boring)
15
faint(verb, adjective, reduce, light)
15
indistinct(adjective, weak, soft, gentle)
15
sad(adjective, unhappy, dark, black, gloom)
15
soften(verb, action, check, reduce)
15
spiritless(adjective, weak, kind, soft)
14
benumb(verb, action, diminish, impair)
14
damp(verb, adjective, upset, trouble)
14
indifferent(adjective, calm, mean, flat)
14
insensitive(noun, adjective, rough, low)
14
somber(adjective, upset, severe, sad)
13
hazy(adjective, weak, soft, gentle)
13
insensible(adjective, flat, attitude, slow)
13
muffle(verb, calm, reduce, diminish)
13
muted(adjective, weak, simple, soft)
13
reduce(verb, stop, upset, check)
13
sober(adjective, characteristic, tough, severe)
12
dampen(verb, upset, calm, trouble)
12
depress(verb, activity, reduce, diminish)
12
dopey(adjective, simple, flat, low)
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APASmart Define. (2016). dull thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/dull/thesaurus/synonyms
ChicagoSmart Define. 2016. "dull thesaurus" https://smartdefine.org/dull/thesaurus/synonyms (accessed September 27, 2026).
HarvardSmart Define 2016, dull thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/dull/thesaurus/synonyms>.
MLASmart Define. "dull thesaurus" 29 March 2016. Web. 27 September 2026. <https://smartdefine.org/dull/thesaurus/synonyms>