"Not now!" (5)
'not now' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for later on that I've seen before include "in the future" , "In the fullness of time" , "Afterwards" , "'Subsequently, afterward (5,2)'" , "At a subsequent time" .)
'not now?' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for then that I've seen before include "soon?" , "Consequently" , "Afterwards - as a result" , "Once upon a time" , "Subsequently - previously" .)
'not now' is the definition.
(at one time, but not any more)
This is the entire clue.
(Other definitions for once that I've seen before include "On a single (or past) occasion" , "in days of yore?" , "Singly" , "Just as a single occurrence" , "In the old days" .)
'not now' is the definition.
(I've seen this before)
This is the entire clue.
(Another definition for another time that I've seen is " Not now".)
'not now' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for later that I've seen before include "Alert (anag.)" , "after the rest?" , "Afterward, subsequent" , "Not just yet" , "succeeding" .)