Tense time to come (6)
I believe the answer is:
future
I believe this clue is a triple definition!
'tense' is the first definition.
(I know that future is a type of tense)
'time' is the second definition.
(future is a kind of time)
'to come' is the third definition.
(I've seen this before)
(Other definitions for future that I've seen before include "Outlook" , "Time that is 4 down" , "What is yet to pass" , "Hereafter" , "What's yet to come" .)