Antonyms of adj genial

2 of 3 senses of genial

Sense 1
affable, amiable, cordial, genial -- (diffusing warmth and friendliness; "an affable smile"; "an amiable gathering"; "cordial relations"; "a cordial greeting"; "a genial host")

INDIRECT (VIA friendly) -> unfriendly -- (not disposed to friendship or friendliness; "an unfriendly coldness of manner"; "an unfriendly action to take")

Sense 3
kind, genial -- (agreeable, conducive to comfort; "a dry climate kind to asthmatics"; "the genial sunshine";"hot summer pavements are anything but kind to the feet")

INDIRECT (VIA hospitable) -> inhospitable -- (unfavorable to life or growth; "the barren inhospitable desert"; "inhospitable mountain areas")

Similarity of adj genial

3 senses of genial

Sense 1
affable, amiable, cordial, genial -- (diffusing warmth and friendliness; "an affable smile"; "an amiable gathering"; "cordial relations"; "a cordial greeting"; "a genial host")
       => friendly (vs. unfriendly) -- (characteristic of or befitting a friend; "friendly advice"; "a friendly neighborhood"; "the only friendly person here"; "a friendly host and hostess")

Sense 2
genial, mental -- (of or relating to the chin or median part of the lower jaw)

Sense 3
kind, genial -- (agreeable, conducive to comfort; "a dry climate kind to asthmatics"; "the genial sunshine";"hot summer pavements are anything but kind to the feet")
       => hospitable (vs. inhospitable) -- (favorable to life and growth; "soil sufficiently hospitable for forest growth"; "a hospitable environment")