† ˈimpiate,v.Obs.rare—0. [f. L. impiāt-, ppl. stem of impiāre to render impious, defile with sin, f.impius impious.] trans. To pollute, defile. Hence † impiˈation, defilement. 1623Cockeram, Impiate, to defile with dishonestie.1658Phillips, Impiation, a defiling.