Answer:

later

Answer	Crossword Clue
LATER	Slangy "so-long"
LATER	Slangy farewell
LATER	"Ciao!"

LATER	"So long!"
LATER	Slangy so-long
LATER	"See you ......, alligator"
LATER	"Can't you see I'm busy?"
LATER	Informal goodbye
LATER	Subsequent
LATER	In a while
LATER	Some other time

LATER	"See ya"
LATER	Not right now
LATER	"Ciao"
LATER	"In a little while"
LATER	By and by
LATER	Subsequently
LATER	"See ya!"
LATER	Delaying response

LATER	Not as timely
LATER	In a bit
LATER	Procrastinator's word
LATER	"Bye for now"
LATER	In an hour, say
LATER	"Ta-ta!"
LATER	"I'm outta here!"
LATER	"See ya .."

LATER	Afterward
LATER	"Hasta la vista!"
LATER	Down the road
LATER	Good time for a procrastinator?
LATER	"Be seein' ya!"
LATER	"Seeya"
LATER	At some time in the future
LATER	Not now

LATER	When I'll see ya
LATER	At another time
LATER	Slangy "So long!"
LATER	"Hasta luego!"
LATER	In the future