noun, masculine/feminine/i.dɔ.latʁ/plural: idolâtres
idolâtre is masculine or feminine depending on context in French.
idolater
Related: idolâtrer, idolâtrique
Learned borrowing from Latin īdōlolatrēs (with haplology), itself borrowed from Ancient Greek εἰδωλολάτρης (eidōlolátrēs).