Antonyms for the phrase "finds congenial" could include "dislikes," "finds uncomfortable," "doesn't enjoy," "finds incompatible," "has difficulty with," or "opposes." These antonyms suggest that the individual in question does not find the situation or person to be a good match, comfortable, or pleasing. This may result from differences in personality, interests, or values. For example, if someone finds a particular job to be congenial, they may dislike a job that is very different from their preferred working environment. Similarly, if someone finds a person congenial, they may find someone else to be incompatible with their personality or worldview.