• (v. t.) To speak gutturally; to give a guttural sound to.
Gut'tur·al·ize transitive verb To speak gutturally; to give a guttural sound to. 
gutturalize 1. To say in guttural way; that is, to pronounce a speech sound in the throat or toward the back of the mouth. 2. To speak or to say something harshly, or to speak or to say something in a harsh rasping way. 3. To pronounce as, or to supplement with, a guttural or gutturalized sound.