Ear-piercingly is used to describe a sound that is sharp and painful to hear. There are numerous synonyms for this word that can be used to avoid repetition in writing. Some of the common synonyms for ear-piercingly are screeching, shrill, piercing, loud, noisy, high-pitched, squeaky, grating, rough, and jarring. These words are used to create a vivid and descriptive picture in the reader's mind. It is important to choose the right word to convey the exact meaning and tone of the sentence. By using synonyms for ear-piercingly, writers can add variation to their writing and make their content more engaging and interesting.