Sticky delay (5)
I believe the answer is:
tarry
I believe this clue is a double definition.
'sticky' is the first definition.
(I've seen this before)
'delay' is the second definition.
(to tarry is to delay leaving a place)
(Other definitions for tarry that I've seen before include "Delay leaving" , "perhaps not to split" , "Stay longer than intended" , "'Delay, linger (5)'" , "covered with dark liquid" .)