A0404400 (är′kē-ĭz′əm, -kā-)n.1. An archaic word, phrase, idiom, or other expression.2. An archaic style, quality, or usage.[New Latin archaeismus, from Greek arkhaismos, from arkhaios, ancient; see archaic.]ar′cha·ist n.ar′cha·is′tic(-ĭs′tĭk) adj.Thesaurus
Adj.
1.
archaistic - imitative of an archaic style or manner; "archaistic writing"