sonny

from WordNet (r) 3.0 (2006)

sonny
    n 1: a male child (a familiar term of address to a boy) [syn:
         {cub}, {lad}, {laddie}, {sonny}, {sonny boy}]

from Moby Thesaurus II by Grady Ward, 1.0

38 Moby Thesaurus words for "sonny":
      boy, bub, bubba, buck, bud, buddy, child, colt, cub, daughter,
      descendant, fellow, fledgling, foster child, grandchild,
      granddaughter, grandson, heiress, hobbledehoy, lad, laddie,
      manchild, master, muchacho, offspring, pup, puppy, schoolboy,
      scion, son, son and heir, sonny boy, stepchild, stepdaughter,
      stepson, whelp, young man, youth