Three times required to ring university? Extremely upset son expresses disapproval (3,4)
I believe the answer is:
tut-tuts
'three times required to ring university? extremely' is the definition.
I don't know anything about this answer so I can't tell whether it can be defined by this definition.
'upset son expresses disapproval' is the wordplay.
'upset' says the letters should be written in reverse.
'son' becomes 's'.
'expresses disapproval' becomes 'tuttut' (I can't explain this - if you can you should give a lot more credence to this answer).
's'+'tuttut'='stuttut'
'stuttut' reversed gives 'TUT-TUTS'.
Can you help me to learn more?
(Another definition for tut-tuts that I've seen is " sounds of disapproval".)