Zipsup

7 clues
Closes a fly
Closes, as a fly
Closes, as a jacket
Avoids a fly pop-out?
Fastens pants, in a way
Closes, as a windbreaker
Prepares to leave the stall
Similar answers:
Abutsupon
Acesup
Actsup
Actsupon
Addsup
Addsupto
Adoredsuperstar
Airsupply
Akronzips
Amplesupply
Ampsup
Animalsuperhero
Antesup
Archiesupport
Ardentsupporter
Aresuperficial
Aroundasupermarket
Artichokesup
Asaheadsup
Asksup