chap, fellow, feller, fella, lad, gent, blighter, cuss, bloke -- (a boy or man; "that chap is your host"; "there's a fellow at the door"; "he's a likable cuss"; "he's a good bloke")
companion, comrade, fellow, familiar, associate -- (a friend who is frequently in the company of another; "drinking companions"; "comrades in arms")
colleague, confrere, fellow -- (a person who is member of one's class or profession; "the surgeon consulted his colleagues"; "he sent e-mail to his fellow hackers")
mate, fellow -- (one of a pair; "he lost the mate to his shoe"; "one eye was blue but its fellow was brown")
fellow -- (a member of a learned society; "he was elected a fellow of the American Physiological Association")
fellow, dude, buster -- (an informal form of address for a man; "Say, fellow, what are you doing?"; "Hey buster, what's up?")
boyfriend, fellow, beau, swain, young man -- (a man who is the lover of a girl or young woman; "if I'd known he was her boyfriend I wouldn't have asked")
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