THESAURUS
grown up
adult, big, blooming, blossoming, budding, burgeoning, crescent, developed, florescent, flourishing, flowering, full-fledged, full-grown, fully developed, growing, grown, hypertrophied, marriable, marriageable, mature, maturescent, nubile, of age, of marriageable age, old, overdeveloped, overgrown, sprouting, thriving
ROGET THESAURUS
grown up
Adolescence
N
adolescence, pubescence, majority, adultism, adultness, manhood, virility, maturity full age, ripe age, flower of age, prime of life, meridian of life, spring of life, man, woman, adult, no chicken, adolescent, pubescent, of age, of full age, of ripe age, out of one's teens,
grown up, mature, full grown, in one's prime, middle-aged, manly, virile, adult, womanly, matronly, marriageable, nubile, Time with reference to an Effect or Purpose.