Nonabrasive refers to something that does not cause damage, harm or irritation. The antonyms for nonabrasive are - abrasive, rough, harsh, scratchy, coarse, grating, jagged, sharp, pointed, spiky, unpolished, ragged, uneven, bristly, rugged, and scabrous. Abrasive refers to rough or coarse surfaces that can cause damage or scratches. Rough is an alternative that describes surfaces that are not smooth or soft. Harsh is used for surfaces that are unpleasant or severe. Scratchy and coarse are used to describe textures that are rough to the touch. Jagged, pointed, spiky and unpolished describe surfaces that contain sharp or rough edges.