Revealing a secret can be done in many ways, and the crossword solutions provide four of them. DIVULGE is a 7-letter word meaning to make something known, usually something that was previously unknown or kept secret. BLAB is a 4-letter word meaning to talk too much, often about something that should have been kept secret. TELL is also a 4-letter word, meaning to make something known, usually by speaking or writing. Lastly, let on is a 5-letter phrase meaning to reveal something, usually unintentionally. All four words and phrases refer to making something known that was previously unknown or kept secret.