Answer:

ago

AnswerCrossword Clue
AGOBack
AGOGone by
AGOIn the past
AGOPast
AGO"... long, long ..."
AGOBefore now
AGOEarlier
AGOGive it .. (try)
AGOHeretofore
AGOOnce upon a time
AGO"Give it ..."
AGOBack in time
AGOSecond word of the Carpenters' "Superstar"
AGOShakespearean schemer
AGO"Beers ..." (Toby Keith song that uses alcohol as a measure of time)
AGOIn former days
AGOWay back when
AGOOf yore
AGOSyne
AGOIn days of yore
AGOElapsed
AGODown the stream
AGOPassed by
AGOOver the dam
AGOPreviously
AGOBefore this time
AGO"Give it ..!"
AGOFormerly
AGOIn past time
AGOSixth word of the Gettysburg Address
AGOSixth word of "Moby-Dick"
AGOHistory-textbook adjective
AGOThird word of "Mary's Boy Child"
AGOLong ...
AGOOpposite of hence
AGO"It's ...!": "Yes!"
AGOReminiscence word
AGO"That was a long time .."
AGO"Fourscore and seven years .. ..."
AGO"A long time .. in a galaxy far, far away ..."