KEY: Add.
SYN: Adduce, adjoin, increase, extend, enlarge, sum_up, cast_up,subjoin, amplify, annex.
ANT: Deduct, subtract, dissever, abstract.

• Irremovable
• Irreparable, [See REPARABLE]
• Irreprehensible, [See REPREHENSIBLE]
• Irrepressible
• Irreproachable, [See BLAMELESS]
• Irreprovable
• Irresistible, [See RESISTIBLE]
• Irresolute, [See RESOLUTE]
• Irrespective, [See RESPECTIVE]
• Irresponsible
• Irretrievable, [See RETRIEVABLE]
• Irreverence, [See REVERENCE]
• Irreversible, [See REVERSIBLE]
• Irrevocable, [See REVERSIBLE]
• Irrigate
• Irrigation, [See IRRIGATE]
• Irritable, [See HASTY]
• Irritant, [See TENTATIVE]
• Irritate
• Irritation, [See IRRITATE]
• Irruption
• Isolate
• Isolation
• Issue
• {[ItEolst]?}