Subsequent time (6)
I believe the answer is:
second
I believe this clue is a double definition.
'subsequent' is the first definition.
(thesaurus)
'time' is the second definition.
(I know that second is a type of time)
(Other definitions for second that I've seen before include "Endorse, back" , "Short time; attendant at a duel" , "Short period of time" , "not for long!" , "another?" .)