Im-päir', *em-peir-en, *en-peir-en, v

t. & i. [O. Fr. empeirer (Fr. empirer), from Low Latin impejoro to make worse: im -in, and pejoro to worse; pejus (gen it. pejoris ) =worse.] A. Trans.: To make worse; to injure; to deteriorate; to diminish in excellence, quality, value, strength, .; to weaken; to enfeeble. "Time sensibly all things impairs ."