"Squawky" is a word that is often used to describe a high-pitched or harsh voice or sound. However, there are a variety of antonyms that can be used to describe a more pleasing voice or sound. Some possible antonyms for "squawky" might include "mellifluous," "soothing," "calming," "serene," "gentle," "smooth," "sweet," and "harmonious." Each of these words describes a different quality that might be used to describe a pleasant voice or sound. By choosing the appropriate antonym, it can help us convey a more nuanced or specific meaning, depending on the context in which we are using the word.