Go without nookie? (4)
I believe the answer is:
exit
'go' is the definition.
(synonyms)
'without nookie?' is the wordplay.
'without' becomes 'ex' (I've seen this in other clues).
'nookie?' becomes 'it' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'ex'+'it'='EXIT'
Can you help me to learn more?
(Other definitions for exit that I've seen before include "Actor's departure" , "Escape route?" , "walk away" , "Means of egress" , "Road leaving motorway" .)