RETRO
retro
(noun) a fashion reminiscent of the past
Source: WordNet® 3.1
Etymology
Adjective
retro (comparative more retro, superlative most retro)
Of, or relating to, the past, past times, or the way things were.
Affecting things past; retroactive, ex post facto.
Noun
retro (countable and uncountable, plural retros or retroes)
(uncountable) Past fashions or trends.
(countable) Abbreviation of retrorocket.
(countable) Abbreviation of retrospective.
Source: Wiktionary
Retro-. Etym: [L. retro, adv., backward, back. Cf. Re-.]
Definition: A prefix or combining form signifying backward, back; as,
retroact, to act backward; retrospect, a looking back.
Source: Webster’s Unabridged Dictionary 1913 Edition