irrigable (adj.) irrevocable (adj.) irreversible (adj.) irreverent (adj.) irreverence (n.) irretrievable (adj.) irretractable (adj.) irresponsive (adj.) irresponsible (adj.) irresponsibility (n.) irrespective (adj.) irresolvable (adj.) irresolution (n.) irresolute (adj.) irresistible (adj.) irresistance (n.) irreputable (adj.) irreption (n.) irreproachable (adj.) irrepressible (adj.)