retroactive
/ˌɹɛ.tɹoʊˈæk.tɪv/ adjective C2- Extending in scope, effect, application or influence to a prior time or to prior conditions.
Learn retroactive in real texts
With a free account, hover any word in the library for its meaning, hear it read aloud, save words for review timed to your memory, and see how much of each book you already know.