n. The adoption or imitation of that which is antiquated or out of use; especially, the use of archaic words or fòrms of speech.n. The quality of being archaic; antiquity of style, manner, or use, as in art or literature; especially, in art, the appearance of traces of the imperfect conception or unskilful handling of tools and material belonging to an art before the time of its highest development. See the archaic, under archaic.n. That which is archaic; especially, an antiquated or obsolete word, expression, pronunciation, or idiom.