Still time for an incident (5)
I believe the answer is:
event
'for an incident' is the definition.
(an incident is an event or happening)
'still time' is the wordplay.
'still' becomes 'even' (synonyms).
'time' becomes 't' (abbreviation).
'even'+'t'='EVENT'
(Other definitions for event that I've seen before include "Particular happening" , "Planned public or social occasion" , "major incident" , "A notable occurrence or happening" , "Something taking place" .)