retro

Of, or relating to, the past, past times, or the way things were.

Scientists say that while the public may think of the moon as a problem solved and a bit retro – the place astronauts visited a half-dozen times way back before Watergate and then abandoned with a giant "meh" from mankind – in fact, lunar studies is a vibrant enterprise that is yielding a wealth of surprises.

Affecting things past; retroactive, ex post facto.

Past fashions or trends.

Abbreviation of retrorocket.

Abbreviation of retrospective.

Richard Leacock's 1981 film portrait, Louise Brooks, was shown during a retro of Ms. Brooks's films at the Walker Art Center.

A chess puzzle of retrograde analysis, requiring the solver to work out the history of moves leading to the position presented.