AnalyzerSentence analysis3SpansSentence精神的に大人になる1000 character limitAnalyzeSentence精せい神しん的てきに大人おとなになるSpan Details精せい神しん的てきmental; emotional; psychologicalna-adjectiveにadverbial form after an adjectival suffixgrammar大人おとなになるgrow up; become an adultexpression, verb