say it: REH-troh
retro is a noun and adjective meaning "a fashion reminiscent of the past". It carries 2 recorded senses.
a fashion reminiscent of the past
affecting things past
“retroactive tax increase”
“an ex-post-facto law”
“retro pay”
Forms marked · are formed by the regular rule rather than recorded in the source data. English keeps a few hundred irregulars and the rest follow the pattern, so the rule is right far more often than not — but it is a rule, and the mark says so.
Definitions, synonyms and semantic relations for retro come from Princeton University’s WordNet. The pronunciation comes from the CMU Pronouncing Dictionary. Commonness is measured against a corpus of everyday English. Full sources and licences.