outdate /aʊtˈdeɪt/verb 3adjective 1forms 5 verb3 •To make obsolete or out of date.This outdates everything that has come before it. •To become obsolete or out of date.This product outdates four hours after preparation.The bedroom is too "themey" and this outdates in no time. •To date someone of a different racial group.That's actually... not bad! IR [interracial] marriage rates are very similar to the rates of other minority men. We outdate just fine (out of those of us who manage to marry). — 2017 adjective1 •(UK, rare) Old-fashioned, out of date; outdated. formsoutdated · outdating · outdates · more outdate · most outdate