The word "un-sounded" refers to something that has not been expressed, spoken, or uttered. The antonyms of "un-sounded" would be words that describe the act of expressing, speaking or uttering. The antonyms of "un-sounded" include articulate, enunciate, articulate, express, voice, talk, pronounce, speak, verbalize, and communicate. To articulate or enunciate is to pronounce words clearly and distinctly. To express, voice, communicate and talk are to convey information or emotions in words. Use of antonyms to describe different aspects of a word is helpful in broadening vocabulary and understanding communication more comprehensively.