University clear about student undermining greeting, it's wrong (9)
I believe the answer is:
unethical
'wrong' is the definition.
(similar in meaning)
'university clear about student undermining greeting' is the wordplay.
I cannot really understand how this works, but
'university' could be 'u' (abbreviation for university) and 'u' is found in the answer.
'clear' could be 'net' (as in net profit) and 'net' is found in the answer.
'about' could be 'ca' (circa) and 'ca' is found within the answer.
'student' could be 'l' (as in L-plates for learner drivers) and 'l' is found in the answer.
'greeting' could be 'hi' (hi is a kind of greeting) and 'hi' is present in the answer.
No letters remain.
This explanation may well be incorrect...
'it's' is the link.
Can you help me to learn more?
(Other definitions for unethical that I've seen before include "Not conforming to moral standards" , "bad" , "Not morally correct" , "Wrong, immoral" , "Dishonourable" .)