1. Quality or degree of being harmless, esp. to health
   - harmlessness, nontoxicity

Derived forms: innocuousnesses

• irrelevant
• irrelevantly
• irreligion
• irreligionist
• irreligious
• irreligiousness
• irremediable
• irremediably
• irremissible
• irremovable
• irreparable
• irreparably
• irreplaceable
• irreplaceableness
• irrepressibility
• irrepressible
• irrepressibly
• irreproachable
• irreproachably
• irreproducibility
• irreproducible
• irresistibility
• irresistible
• irresistible impulse
• irresistibleness