Answer: retro

AnswerCrossword Clue
RETROSo out it's in
RETROIn after going out
RETROIn again
RETROFrom a bygone era
RETROLike '80s fashion, say
RETROEvoking the past
RETRONostalgically fashionable
RETROBack in
RETROBack in vogue
RETROIn, again
RETROOf a prior time
RETROAppealing to nostalgists
RETROLike back pay, briefly
RETROLike leg warmers and Nehru jackets
RETROLike oldies
RETROPrefix with active
RETROIn vogue again
RETROIn once more
RETROLike a nostalgic fashion
RETRONo longer out, in a way
retroof or designating the style of an earlier time
RETROBehind (pref.)
RETRORocket starter
RETROCertain rocket engine
RETRORocket stage
RETROActive prefix
RETROLeader for active or rocket
RETROType of fashion
RETROLike some fashionable junk
RETROLike throwback uniforms
RETROFashionably old-fashioned
RETROLeisure suit description
RETROKind of rocket
RETROEvoking an earlier style
RETROBackward-looking
RETRONostalgic
RETROSo old it's new
RETROIn by being out?
RETROChic again
RETROStylish again