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Meaning of word retroactive from English dictionary with examples, synonyms and antonyms.

retroactive   adjective

Meaning : Descriptive of any event or stimulus or process that has an effect on the effects of events or stimuli or process that occurred previously.

Descriptive of any event or stimulus or process that has an effect on events or stimuli or processes that occur subsequently.

Proactive inhibition.
Proactive interference.
proactive

Meaning : Affecting things past.

Example : Retroactive tax increase.
An ex-post-facto law.
Retro pay.

Synonyms : ex post facto, retro