Answer:

agesago

Answer	Crossword Clue
AGESAGO	Way back when
AGESAGO	In days of yore
AGESAGO	In the distant past

AGESAGO	In the very old days
AGESAGO	When dinosaurs roamed
AGESAGO	In olden days
AGESAGO	A good while back
AGESAGO	Way back
AGESAGO	Back when
AGESAGO	Way, way back
AGESAGO	Once upon a time

AGESAGO	Far, far back
AGESAGO	Far back
AGESAGO	Back in the day
AGESAGO	Quite a while back
AGESAGO	Long in the past
AGESAGO	Way in the past
AGESAGO	A long time past
AGESAGO	In olden times

AGESAGO	Before any of us can remember, perhaps
AGESAGO	Way back in time
AGESAGO	A very long time back