Goingout

3 clues
Socializing
Becoming passé
Leaving for the evening
Similar answers:
Actingout
Actingoutage
Agoing
Agouti
Agoutis
Agouty
Airingout
Allhangout
Amishgoingcrazy
Aregoing
Askingout
Backingout
Bailingout
Baseballdugout
Bawlingout
Beltingout
Beltingoutatune
Bleepingout
Blockingout
Blowingout