Definitions:

1. affecting things past adjective
   • retroactive tax increase

Synonyms:

• ex post facto

NearBy Words:

• retroactive
• retroactively
• retrofit
• retroflection
• retroflex
• retroflexed
• retroflexion
• retrograde
• retrogress
• retrogression
• retrogressive
• retronym
• retrophyllum
• retrorocket
• retrorse
• retrospect
• retrospection
• retrospective
• retrospectively
• retrousse
• retroversion
• retrovert
• retrovirus
• retrovision