18
soul-crushing
16
boring
6
dull
5
jejune
5
very upset
4
unentertaining(verb, adjective)
4
cringeworthy
4
sad(adjective, happy, merry, fun, enjoy)
3
tiring
3
uninteresting
2
monotonous
2
tedious(adjective, dull, monotonous)
2
dreary
2
flat
2
heavy
2
humdrum
2
leaden
2
pedestrian
2
stodgy
2
stuffy
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APASmart Define. (2015). entertaining thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/entertaining/thesaurus/antonyms
ChicagoSmart Define. 2015. "entertaining thesaurus" https://smartdefine.org/entertaining/thesaurus/antonyms (accessed September 24, 2026).
HarvardSmart Define 2015, entertaining thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/entertaining/thesaurus/antonyms>.
MLASmart Define. "entertaining thesaurus" 14 April 2015. Web. 24 September 2026. <https://smartdefine.org/entertaining/thesaurus/antonyms>