Retroactive Definition

rĕtrō-ăktĭv
adjective
Having application to or effect on things done prior to its enactment.
A retroactive law.
Webster's New World
Going into effect as of a specified date in the past.
A retroactive increase.
Webster's New World

Referring to a law, a ruling, and so on affecting matters that occurred beforehand; affecting past happenings. See also prospective.

Webster's New World Law
Synonyms:
Antonyms:

Origin of Retroactive

  • French rétroactif from Latin retroāctus past participle of retroagere to drive back retrō- retro- agere to drive ag- in Indo-European roots

    From American Heritage Dictionary of the English Language, 5th Edition

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