is

aux.& v.是

irretrievable, irretrievably, irreverence, irreverent, irreverently, irreversible, irreversibly, irrevocable, irrevocably, irrigable, irrigate, irrigation, irritability, irritable, irritably, irritant, irritate, irritating, irritation, irruption, is(o)-, Isaac Newton, ISBN, ISD, isinglass, Islam, Islamic, island, islander, isle, islet, ism, isn't, ISO, isobar, isolate, isolated, isolation, isolation hospital, isolation ward, isolationism,