5
unpleasant(adjective, mean, hard, evil, rough)
5
unwarmhearted(adjective, person, negative)
5
vengeful(adjective, evil, nasty, cold, negative)
5
virulent(adjective, mean, nasty, hostile, bitter)
4
alien(adjective, mean, bad, nasty, cold)
4
allergic(adjective, mean, nasty, hostile, hateful)
4
austere(adjective, cold, shy, standoffish, unsociable)
4
averse(adjective, bad, disgusting, vile, antagonistic)
4
bad-tempered(adjective, mean, hard, evil, rough)
4
bitter(adjective, set, mean, nasty, hostile)
4
bleak
4
callous(adjective, hard, evil, rough, nasty)
4
churlish(adjective, mean, hard, rough, nasty)
4
counter(disgusting, revolting, repulsive, obstructive, unaccommodating)
4
dim
4
disadvantageous(adjective, person, negative, hostile, antagonistic)
4
dismal(adjective, severe, dark, indifferent, gloomy)
4
gruff(adjective, sharp, nasty, rude, unpleasant)
4
hard-hearted(adjective, person, mean, hard, indifferent)
4
heartless(adjective, person, mean, hard, feelings)
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APASmart Define. (2016). unfriendly thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/unfriendly/thesaurus/synonyms
ChicagoSmart Define. 2016. "unfriendly thesaurus" https://smartdefine.org/unfriendly/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2016, unfriendly thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/unfriendly/thesaurus/synonyms>.
MLASmart Define. "unfriendly thesaurus" 31 March 2016. Web. 23 September 2026. <https://smartdefine.org/unfriendly/thesaurus/synonyms>