Tweeners is a term used to describe individuals who are in between childhood and teenage years. There are several other synonyms for this term such as preteens, adolescents, young teens, juveniles, and middlers. These synonyms are often used interchangeably to describe young people who are still developing physically and mentally. Preteens is a term used to describe individuals who are on the cusp of reaching their teenage years, while adolescents is a more general term that refers to teenagers as a whole. Juveniles is a more formal term that is used in legal contexts, and middlers is a term used to describe those who are halfway between childhood and teenage years.