Defn: 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. J. Webster.

UNDERAGENT
Un"der*a`gent, n.

Defn: A subordinate agent.

UNDERAID
Un`der*aid", v. t.

Defn: To aid clandestinely. [Obs.]

UNDER-ARM
Un"der-arm, a. (Cricket)

Defn: Done (as bowling) with the arm not raised above the elbow, that is, not swung far out from the body; underhand. Cf. Over-arm and Round-Arm.

UNDERBACK
Un"der*back`, n. (Brewing)

Defn: A vessel which receives the wort as it flows from the mashing tub.

UNDERBEAR Un`der*bear", v. t. Etym: [AS. underberan. See Under, and Bear to support.]