巨婴 Traditional form: 巨嬰 Pinyin (reading): jùyīng Definitions: (neologism c. 2017) adult who behaves in a childish manner (e.g. throwing a tantrum) Characters: 巨 - large, huge, gigantic; chief 婴 - baby, infant; to bother Traditional characters: 巨 - large, huge, gigantic; chief 嬰 - baby, infant; to bother