Clear one's throat but not expect to speak (5)
I believe the answer is:
orate
'speak' is the definition.
(orating is a kind of speaking)
I can't explain the remainder of the clue.
Can you help me to learn more?
(Other definitions for orate that I've seen before include "Give a formal address" , "Speak formally" , "make speeches" , "Talk pompously" , "Give speech" .)