SMART Vocabulary: Connected words and phrases Physically and mentally mature & immature Grownup adulting getting older babyish childish immature immaturely immaturity infantile juvenile maturity overgrown petulance petulancy petulant petulantly puerility secondary sexual attribute sophomoric younger at heart idiom See additional results » Onze redactie maakt al jaren uitleg­movie’s. D... https://mature52.com