impropriety

n. 不正当（的行为）

impressionability, impressionable, impressionism, impressions, impressive, impressively, impressiveness, imprimatur, imprint, imprinting, imprison, imprisonment, improbability, improbable, improbably, improbity, impromptu, improper, improper fraction, improperly, improve, improve on, improvement, improvidence, improvident, improvidently, improvisation, improvise, improvised, imprudence, imprudent, imprudently, impudence, impudent, impudently, impugn, impuissance, impulse, impulse buying, impulsion,