teenager

The word “teenager” means a person aged between thirteen and nineteen years old. In plain terms, someone in their teens, aged thirteen to nineteen.

“Teenager” is pronounced TEEN-ay-juh (/ˈtinˌeɪ.dʒɚ/ in IPA).

Here is “teenager” used in a sentence: “The gym offers a discount for teenagers.”

“Teenager” is a noun.

“Teenager” is a fairly common word in modern English, usually learned at around the A2 level.

A teenager is defined strictly by age — a person between thirteen and nineteen, the numbers that end in "-teen." Adolescent is a more formal or clinical term for someone in the developmental stage between childhood and adulthood, which is defined by physical and psychological development rather than exact age.

No. A teenager is a person aged between thirteen and nineteen, so a twelve-year-old falls just outside the range. Children of around that age are often called tweens or preteens because they are approaching their teenage years.

No. The teenage years end at nineteen, because twenty no longer ends in "-teen." A twenty-year-old is described as a young adult rather than a teenager.

They mean the same thing — a person aged thirteen to nineteen — but teen is the shorter, more informal form, common in headlines and casual speech. Teenager is the full standard noun and suits neutral or formal writing.