Up to, but not past (5)
I believe the answer is:
until
(Other definitions for until that I've seen before include "Pending such time as" , "Before a given time" , "Not beyond (hour)" , "Up to (a point in time)" , "Unlit (anag.)" .)
I believe the answer is:
until
(Other definitions for until that I've seen before include "Pending such time as" , "Before a given time" , "Not beyond (hour)" , "Up to (a point in time)" , "Unlit (anag.)" .)