Learner's definition of CONGENIAL
[more congenial; most congenial]somewhat formal
1 a : suitable or appropriate — often + to b : pleasant and enjoyable
◊ Someone who is described as Miss Congeniality or Mr. Congeniality is a very friendly person who could win a contest for having the best personality. These phrases are often used in a negative or ironic way to say that someone is not friendly.