Want date on evening to turn up (4)
I believe the answer is:
need
'want' is the definition.
(synonyms)
'date on evening to turn up' is the wordplay.
'date' becomes 'd' (common abbreviation eg in DOB, date of birth).
'on evening' becomes 'een' (I can't explain this - if you can you should believe this answer much more).
'to turn up' says the letters should be written in reverse.
'd'+'een'='deen'
'deen' backwards is 'NEED'.
Can you help me to learn more?
(Other definitions for need that I've seen before include "Require; want" , "Call" , "Necessitate" , "Desideratum" , "Necessity" .)