underage

adj

1. (not-comparable)Below the legal age (usually age 18) for some activity, such as consuming alcohol or engaging in sexual intercourse.

   “underage drinking”

   “underage marriage”

   “The bar was fined for serving alcohol to an underage customer.”

   “He was arrested for driving while underage.”

2. (not-comparable)Not yet a legal adult; still a minor.

   “underage offender”

3. (Ireland, not-comparable)Limited to players below a certain age; junior.

   “Even if an underage team is stacked with talent, there is still only one senior team they can graduate to and there are a finite amount of places.”

noun

1. A deficit or shortfall in funds, inventory, or capacity.