retroactive

First attested in 1610. From French rétroactif

• (UK) IPA^(key): /ˌɹɛt.ɹəʊˈæk.tɪv/
• (US) IPA^(key): /ˌɹɛ.tɹoʊˈæk.tɪv/

• Audio (US):

  (file)

• Audio (General Australian):

  (file)

retroactive (not comparable)

1. Extending in scope, effect, application or influence to a prior time or to prior conditions

• retroactive rape
• retroactively

• retroaction

• ex post facto
• retrospective