Treater rhymes with:
streater, streeter, strieter, praetor, streater, streeter, strieter, beater, cheater, deater, deeter, demeter, demetre, depleter, dieter, eater, heater, heeter, jeeter, jeter, keator, keeter, keiter, liter, meter, molitor, neater, peter, pieter, praetor, repeater, schleeter, seater, skeeter, sleeter, sliter, streater, streeter, strieter, st_peter, sweeter, teater, teeter, teter, vanmeter, vanmetre, vietor, yeater
Treater sounds like:
tartar, tarter, territory, tertiary, tortora, torture, torturer, trader, traitor, treder, tretter, trotter, trottier