23
boring
17
soul-crushing
7
tedious
7
unexciting
6
jejune
5
tiresome
4
dreary
4
dull
4
sad(adjective, feeling, happy, glad)
3
depressing(adjective, usual)
3
uninteresting
2
monotonous
2
narcotic
2
stoic
2
stuffy
1
dismal
1
drab
1
flat
1
humdrum
1
leaden
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APASmart Define. (2015). thrilling thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/thrilling/thesaurus/antonyms
ChicagoSmart Define. 2015. "thrilling thesaurus" https://smartdefine.org/thrilling/thesaurus/antonyms (accessed September 24, 2026).
HarvardSmart Define 2015, thrilling thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/thrilling/thesaurus/antonyms>.
MLASmart Define. "thrilling thesaurus" 20 July 2015. Web. 24 September 2026. <https://smartdefine.org/thrilling/thesaurus/antonyms>