Definition of "underage" in English

adjective

1. 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 yet a legal adult; still a minor.

   • underage offender

3. (sports, Ireland, of a team or competition) Limited to players below a certain age; junior.

noun

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