Synonyms and related words :
aunt, auntie, blood brother, boy, brethren, brother, bubba, buck, bud, buddy, colt, country cousin, cousin, cousin once removed, cousin twice removed, cub, daughter, father, fellow, first cousin, fledgling, foster brother, frater, grandnephew, grandniece, granduncle, great-aunt, great-uncle, half brother, hobbledehoy, kid brother, lad, laddie, manchild, master, mother, muchacho, nephew, niece, nuncle, nunks, nunky, pup, puppy, schoolboy, second cousin, sis, sissy, sister, sister-german, sistern, son, sonny, sonny boy, stepbrother, stepsister, unc, uncle, uncs, uterine brother, whelp, young man, youth