- Used other than as an idiom: see speak, for.
- To speak on somebody's behalf.
- I think I speak for the whole group when I say that we're glad you came.
- (idiomatic) To claim, reserve, or occupy.
- Be sure to speak for a seat early, if you plan to attend.
- (idiomatic) To represent an intrinsic quality
- You really do deserve to be published - your recent articles speak for themselves.