6
cheerless
6
excruciating(adjective, hard, evil, sharp, rough)
6
gelid(adjective, cool, severe, keen, sharp)
6
ill-tempered(adjective, mad, irritation, annoyance, annoyed)
6
infuriated(adjective, mad, irritation, annoyance, discontent)
6
irritating(adjective, painful)
6
polar(adjective, cool, severe, keen, sharp)
6
rigorous(adjective, strong, hard, tough, severe)
6
sorry
6
spicy(adjective, pungent, pungency)
6
strong(adjective, hard, great, tough, sharp)
6
sulfurous
6
vehement(adjective, strong, rough, intense, powerful)
6
vindictive(adjective, mean, nasty, unkind, pitiless)
6
wrathful(adjective, mad, resentment, unfriendly, irritation)
5
Siberian(adjective, cool, severe, keen, sharp)
5
afflictive(adjective, hard, rough, offensive, unpleasant)
5
alienated(adjective, nasty, hostile, resentful, sulky)
5
bitterness
5
churlish(adjective, speech, unfriendly, irritable, belligerent)
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APASmart Define. (2016). bitter thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/bitter/thesaurus/synonyms
ChicagoSmart Define. 2016. "bitter thesaurus" https://smartdefine.org/bitter/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2016, bitter thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/bitter/thesaurus/synonyms>.
MLASmart Define. "bitter thesaurus" 22 March 2016. Web. 23 September 2026. <https://smartdefine.org/bitter/thesaurus/synonyms>