Grammar rhymes with:
grammer, brammer, crammer, grammer, kramar, krammer, rammer, amor, brammer, cammer, clamor, crammer, dammer, enamor, flammer, glamor, glamour, grammer, hamer, hammar, hammer, hamor, hamre, jammer, kammer, klammer, kramar, krammer, muammar, rammer, scammer, slammer, stammer
Grammar sounds like:
garner, garnier, germer, gerner, goerner, grainery, gramer, grammer, graner, granier, granieri, greener, greenery, greiner, grenier, grimmer, griner, gromer, gronemeyer, groner, groomer, gruener, gruner, guarneri, guarnieri