95 entries under adjective topic. ×

19
unfun(trait, disagreeable, tedium, boredom)
13
gloomy(spirit, depression, sense, feel)
12
woeful(depression, sense, feel, sadness)
10
unhappy(depression, sense, feel, sadness)
9
bad(characteristic, quality, trait, disagreeable)
9
spiritless(spirit, life, soul)
8
sad(feel, impression, emotion, disagreeable)
8
jejune(trait, tedium, boredom, ennui)
7
cringeworthy(noun, sadness, unhappiness, hardship)
6
disagreeable(feel, impression, emotion)
6
dull(trait, tedium, boredom, ennui)
6
melancholy(noun, feeling, sorrow, depression)
6
tiresome(dull, irritating, exasperating, humdrum)
6
dark(feel, impression, emotion)
6
lifeless(spirit, sense, impression, emotion)
6
morose(depression, sense, feel, sadness)
6
mournful(depression, sense, feel, sadness)
6
sorrowful(depression, sense, feel, sadness)
6
tedious(trait, tedium, boredom, ennui)
6
tired(spirit, sense, impression, emotion)
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APASmart Define. (2016). fun thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/fun/thesaurus/antonyms
ChicagoSmart Define. 2016. "fun thesaurus" https://smartdefine.org/fun/thesaurus/antonyms (accessed September 22, 2026).
HarvardSmart Define 2016, fun thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/fun/thesaurus/antonyms>.
MLASmart Define. "fun thesaurus" 15 March 2016. Web. 22 September 2026. <https://smartdefine.org/fun/thesaurus/antonyms>