What happens during night never brought up (5)
I believe the answer is:
event
'what happens' is the definition.
I can't tell whether this defines the answer.
'during night never brought up' is the wordplay.
'during' indicates a hidden word.
'brought up' shows that the letters should be reversed in order (in a down clue, letters go up).
'tneve' is hidden in the letters of 'night never'.
'tneve' back-to-front is 'EVENT'.
Can you help me to learn more?
(Other definitions for event that I've seen before include "celebration?" , "Incident, occurrence" , "Function" , "match" , "case" .)