Wake up to sound arguments (5)
I believe the answer is:
rouse
'wake up' is the definition.
(rouse can mean to wake up)
'sound arguments' is the wordplay.
'sound' indicates a 'sounds like' (homophone) clue.
'arguments' becomes 'rows' (I've seen this in another clue).
'rows' is a homophone of 'ROUSE'.
'to' acts as a link.
(Other definitions for rouse that I've seen before include "Stir into action" , "Cause to wake up, stimulate" , "Bring out of sleep" , "Move" , "Cause to wake up and come alert" .)