"More underaged" is a phrase that refers to individuals who are not legally considered adults yet. Some synonyms for this phrase that can be used in different contexts include "underage," "minor," "juvenile," "teenage," "adolescent," "youthful," "childish," "immature," "inexperienced," and "youngster." These words may be used interchangeably, but they each denote slightly different meanings. "Minor" and "juvenile" are typically used in legal contexts, while "teenage" and "adolescent" are more appropriate when referring to teenagers. "Youthful" and "childish" have a hint of immaturity, whereas "inexperienced" denotes lack of knowledge and skills.