irritant

a. 刺激的,刺激性的 n. 刺激物,刺激剂

irresolution, irrespective, irresponsibility, irresponsible, irresponsibly, irretrievable, irretrievably, irreverence, irreverent, irreverently, irreversible, irreversibly, irrevocable, irrevocably, irrigable, irrigate, irrigation, irritability, irritable, irritably, irritate, irritating, irritation, irruption, is, is(o)-, Isaac Newton, ISBN, ISD, isinglass, Islam, Islamic, island, islander, isle, islet, ism, isn't, ISO, isobar,