Synonyms and related words :
bastard, bird, boy, bub, bubba, buck, bud, buddy, bugger, cat, chap, character, colt, cub, duck, feller, fellow, fledgling, guy, hobbledehoy, jasper, joker, laddie, manchild, master, muchacho, pup, puppy, schoolboy, son, sonny, sonny boy, stripling, stud, tad, whelp, young man, youth