stick up

verb

He tried to stick up for his friend.

意味（1）

(transitive) Used other than figuratively or idiomatically: see stick, up. To put or post up by sticking.

Stick up the postcard with a bit of tape.

意味（2）

(transitive, idiomatic) To rob at gunpoint.

I think they intend to stick up the bank.

意味（3）

(intransitive, idiomatic) To be prominent; to point upwards.

No matter how much I brush it, my hair always sticks up.

意味（4）

(intransitive, with for) To speak or act in defence (of).

Don't let them push you around, stick up for yourself.

意味（5）

(intransitive, with to) To defy, to confront, to stand up to.

意味（6）

(intransitive, with to) To maintain a commitment (as, to a proposition or role)