Party time on tick? (4)
I believe the answer is:
sect
'party' is the definition.
(I've seen this before)
'time on tick?' is the wordplay.
'time' becomes 't' (abbreviation).
'on' says to put letters next to each other.
'tick?' becomes 'sec' (I've seen this in another clue).
't' put after 'sec' is 'SECT'.
(Other definitions for sect that I've seen before include "Group of people with unusual religious beliefs" , "Heretical group" , "Fringe religious group" , "Dissenting clique of a religion" , "Dissenting division of a larger religious group" .)