Also i·dol·ist [ahyd-l-ist] /ˈaɪd l ɪst/. a worshiper of idols.
a person who is an immoderate admirer; devotee.

Origin of idolater

1350–1400; Middle English idolatrer, equivalent to idolatr(ie) idolatry + -er -er2; -rer > -er by dissimilation
Related formsself-i·dol·a·ter, noun Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for idolater

Word Origin and History for idolater

late 14c., ydolatrer "idol-worshipper," from Old French idolatre, contracted from Late Latin idololatres, from Ecclesiastical Greek eidololatres "idol-worshipper" (see idolatry).

Online Etymology Dictionary, © 2010 Douglas Harper