1. Without knowledge or intention
   - unwittingly, inadvertently

Antonym: knowingly

• retrocede
• retrocession
• retrochoir
• retrofit
• retroflection
• retroflex
• retroflexed
• retroflexion
• retrogradation
• retrograde
• retrograde amnesia
• retrogress
• retrogression
• retrogressive
• retromandibular vein
• retronym
• Retrophyllum
• retrorocket
• retrorse
• retrospect
• retrospection
• retrospective
• retrospectively
• retroussé
• retroversion