WordNet (r) 3.0 (2006):
come of age v 1: reach a certain age that marks a transition to maturityMoby Thesaurus II by Grady Ward, 1.0:
19 Moby Thesaurus words for "come of age": attain majority, bloom, come to maturity, develop, fledge, flower, grow, grow up, leave the nest, mature, mellow, reach manhood, reach twenty-one, reach voting age, ripen, season, settle down, temper, toga virilis