Discourage? Turn up with elitist fellow? (3,3)
I believe the answer is:
put off
'discourage?' is the definition.
(putting off is a kind of discouraging)
'turn up with elitist fellow?' is the wordplay.
'turn' says the letters should be written backwards.
'with' means one lot of letters go next to another.
'elitist fellow?' becomes 'toff' (I can't explain this - if you can you should give a lot more credence to this answer).
'up' backwards is 'pu'.
'pu'+'toff'='PUT-OFF'
Can you help me to learn more?
(Other definitions for put off that I've seen before include "Defer to a later time, or alienate" , "Don't ... ... till tomorrow what can be done today" , "'Never ... ... till tomorrow what you can do today'" , "Postpone, repel" , "Deter; delayed" .)