archaic (adj.) Look up archaic at Dictionary.com
1810, from or by influence of French archaique (1776), ultimately from Greek arkhaikos "old-fashioned," from arkhaios "ancient, old-fashioned, antiquated, primitive," from arkhe "beginning" (see archon). Not merely crude, the archaic has "a rudeness and imperfection implying the promise of future advance" [Century Dictionary]. Archaical is attested from 1799.