"Gnarring" means to make a harsh, grinding or grating sound. Antonyms for this word include "melodious," "harmonious," "tuneful," and "pleasant." These words indicate sounds that are pleasing to the ear, such as a beautiful song, a gentle breeze, or a murmuring brook. Other antonyms for "gnarring" include "smooth," "unbroken," and "undisturbed." These words suggest a sense of calmness and tranquility, like the stillness of a quiet night, the peacefulness of a serene lake, or the serenity of a garden. So, if you want to express a more positive or peaceful tone, consider using these antonyms to describe the sounds you hear.