The word "un-companionable" refers to a person who is unfriendly or unsociable. Its antonyms are words that describe people who are pleasant, outgoing and friendly. Some of the antonyms for un-companionable include amicable, sociable, approachable, cordial, affable, and genial. An amicable person is someone who is easy to talk to and willing to listen to others. A sociable person enjoys being around people, while an approachable person is easily approachable by others without any hesitation. A cordial person is warm and friendly, while an affable person is easy to get along with. A genial person is pleasant and cheerful in manner. Using the antonyms of un-companionable, words can be used to describe people who are enjoyable to be around.