Chuck has affair (5)
I believe the answer is:
fling
I believe this clue is a double definition.
'chuck' is the first definition.
(I know that chuck is a more specific form of the action abandon)
'affair' is the second definition.
(a fling is a romantic affair)
'has' is the link.
(Other definitions for fling that I've seen before include "Toss" , "Try" , "Brief affair; throw" , "knees-up at 8 [HIGHLAND GAMES]" , "Throw - short affair" .)