Anlage acrospire aunt auntie blood brother boy brethren brother bub bubba buck buddy burgeon burst forth chick chickabiddy colt country cousin cousin cousin once removed cousin twice removed cub daughter egg embryo engraft father fellow first cousin fledgling flourish flower bud foster brother frater gemma gemmate gemmula gemmule germ germen germinate graft grandnephew grandniece granduncle great-aunt great-uncle grow grow rank half brother hobbledehoy imp implant inarch juvenile kid kid brother lad laddie leaf leaf bud leaf out leave loins luxuriate manchild master moppet mother muchacho nephew niece nipper nucleus nuncle nunks nunky overgrow overrun ovum plumule pullulate pup puppy put forth put forth leaves put out buds riot root rudiment schoolboy second cousin seed shoot shoot up sis sissy sister sister-german sistern son sonny sonny boy spark spermatozoon sprout sprout up stepbrother stepsister strike root take root unc uncle uncs upspear upsprout uterine brother vegetate whelp young man youngling youngster youth