impropriety

impropriety [n] bad taste, mistake barbarism, blunder, faux pas, gaffe, gaucherie, goof*, immodesty, impudence, incongruity, incorrectness, indecency, indecorum, inelegance, rudeness, slip*, solecism, unseemliness, unsuitability, vulgarism, vulgarity; concepts 101,278,674 —Ant. correctness, propriety, suitability, tastefulness