Under-age /(?)/

Un·der-age

Under-age

a.
  1. Not having arrived at adult age; hence, incapable legally of performing certain acts restricted to adults.
  2. Not having arrived at adult age, or at years of discretion; hence, raw; green; immature; boyish; childish. [Obs.]
    I myself have loved a lady, and pursued her with a great deal of under-age protestation.