Main Entry: ar·cha·ism

Pronunciation: \ˈär-kē-ˌi-zəm, -(ˌ)kā-ˌi-\

Function: noun

Etymology: New Latin archaïsmus, from Greek archaïsmos, from archaios

Date: 1643

1 : the use of archaic diction or style
2 : an instance of archaic usage
3 : something archaic; especially : something (as a practice or custom) that is outmoded or old-fashioned

— ar·cha·ist \-ist\ noun

— ar·cha·is·tic \ˌär-kē-ˈis-tik, -(ˌ)kā-\ adjective

— ar·cha·ize \ˈär-kē-ˌīz, -(ˌ)kā-\ verb