Sound out is a phrasal verb that means to pronounce a word aloud or to try to read or spell a word by sounding out each letter. There are several synonyms for sound out including articulate, enunciate, pronounce, recite, vocalize, and utter. These words all refer to the act of producing sound with the mouth. When learning a new language, it is important to sound out words to improve pronunciation and comprehension. Some other possible synonyms for sound out include annunciate, express, speak clearly, and vocalize articulately. Being able to sound out words and speak clearly is a valuable skill in many aspects of life.