忤；志趣不相投的；

1. used of plant stock or scions
    incapable of being grafted

2. not suitable to your tastes or needs

    e.g. the uncongenial roommates were always fighting
           the task was uncongenial to one sensitive to rebuffs

    Synonym: incompatible

3. very unfavorable to life or growth

    e.g. a hostile climate
           an uncongenial atmosphere
           an uncongenial soil
           the unfriendly environment at high altitudes

    Synonym: hostileunfriendly