speak for

verb3

1. •
   To speak on somebody's behalf.

   • I think I speak for the whole group when I say that we're glad you came.
2. •
   To represent an intrinsic quality

   • You really do deserve to be published - your recent articles speak for themselves.
3. •
   To claim, reserve, or occupy.

   • Be sure to speak for a seat early, if you plan to attend.