let out Get Printable Handwriting Hear It! Say It! Write It! Learn It! Spelling Test Definition verb. to release or allow to leave. Example Sentence I let out the secret that I had a little sister on the way. More Example Sentences They let out the dog to play. Synonyms release; free; allow out Antonyms prevent; keep Hear It! Say It! Write It! let out Switch to cursive Start Share with your friends: