6
blue(adjective, decency, cleanliness)
5
disagreeable(adjective, mean, bad, unpleasant)
5
dismal(adjective, clear, light, gloomy, bleak)
5
acrid
5
acrimonious
5
disgusting
5
cruel(good, kind, gentle)
5
ill-natured
4
hostile(good, friendly)
4
sullen
4
surly
4
unfriendly(adjective, mean, bad, unpleasant)
4
unpalatable(adjective, unpleasant)
4
unsavory
4
unwelcome(adjective, welcome)
4
virulent
4
whiny
3
abominable(adjective, awful, detestable)
3
acid
3
hateful(adjective, good, mean, bad, nasty)
10 years ago|11k views|share |citing 
APASmart Define. (2016). pleasant thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/pleasant/thesaurus/antonyms
ChicagoSmart Define. 2016. "pleasant thesaurus" https://smartdefine.org/pleasant/thesaurus/antonyms (accessed September 25, 2026).
HarvardSmart Define 2016, pleasant thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/pleasant/thesaurus/antonyms>.
MLASmart Define. "pleasant thesaurus" 29 March 2016. Web. 25 September 2026. <https://smartdefine.org/pleasant/thesaurus/antonyms>