be mad keen

be mad keen (on someone or something)

To be very enthusiastic or excited about someone or something. Oh, I've seen the way Tim smiles at you—he's definitely mad keen on you! I'm mad keen on that college, so I really hope they accept me.
See also: keen, mad, someone

be mad ˈkeen (on somebody/something)

(informal) be very interested in or enthusiastic about somebody/something: She’s been mad keen on African music ever since she came back from Zimbabwe last year.He’s mad keen on getting into the army.
See also: keen, mad
References in periodicals archive ?
Flanker McCaw said: "Whoever has been picked, these guys are playing for Scotland and they will be mad keen to prove themselves.