Open English Wordnet
Adjectives
(a)uncongenial, incompatiblenot suitable to your tastes or needs“the uncongenial roommates were always fighting”, “the task was uncongenial to one sensitive to rebuffs”
(s)hostile, uncongenial, unfriendlyvery unfavorable to life or growth“a hostile climate”, “an uncongenial atmosphere”, “an uncongenial soil”, “the unfriendly environment at high altitudes”