picklet slip let slip {v. phr.} To unintentionally reveal. Ellen let it slip that she had been a witness to the accident. Categories: add yours verb Source: A Dictionary of American Idioms 'let slip' on video "Cry Havoc, Let slip the dogs of war!" Julius Cesar 1953 HD Scene Cry Havoc, Let slip the dogs of war! (Charlton Heston) 1970 “Let slip the dogs of war” Marlon Brando as Marc Antony Let Slip the Apes of War - War for the Planet of the Apes [Expanded Score] sort: relevance, mode: exact match, q: "let slip", maxResults: 4, videoEmbeddable: true, videoSyndicated: true, safeSearch: strict, type: video Subscribe to: American IdiomsEnglish Slang Discuss