1. Of or relating to artifacts
   - artifactual

See also: artefact [Brit]

• irradiation
• irrational
• irrational hostility
• irrational impulse
• irrational motive
• irrational number
• irrationality
• irrationally
• Irrawaddy
• Irrawaddy River
• irreality
• irreclaimable
• irreconcilability
• irreconcilable
• irreconcilableness
• irreconcilably
• irrecoverable
• irrecoverably
• irrecusable
• irredeemable
• irredeemably
• irredenta
• irredentism
• irredentist
• irreducible