Waits on others as becomes a man! (6)
I believe the answer is:
serves
'waits on' is the definition.
(to wait on someone is to serve them)
'others as becomes a man' is the wordplay.
I cannot really see how this works, but
'man' could be 'erv' and 'erv' is found within the answer.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for serves that I've seen before include "Strokes that puts the ball in play" , "Puts the ball in play on court" , "What a waiter does" , "Puts the tennis ball in play" .)