speak for

verb

1. Used other than figuratively or idiomatically: see speak, for.
2. To speak on somebody's behalf.

   “I think I speak for the whole group when I say that we're glad you came.”

3. To claim, reserve, or occupy.

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

   “I'd imagine she's spoken for.”

4. To represent an intrinsic quality

   “You really do deserve to be published - your recent articles speak for themselves.”