pickad lib . ad lib {v. phr.} To improvise; interpolate during speech. When the actress forgot her lines during the second act, she had to ad lib in order to keep the show going. Categories: add yours verb Source: A Dictionary of American Idioms 'ad lib' on video How to Ad Lib | Become a Better Singer HOW TO AD-LIB WHILE SINGING | Vocal Lessons [ALIVE SHOWCASE VOL.3] The Chainsmokers - Closer 'AD LIB' Usher - SCREAM Choreography . AD LIB sort: relevance, mode: exact match, q: "ad lib", maxResults: 4, videoEmbeddable: true, videoSyndicated: true, safeSearch: strict, type: video Subscribe to: American IdiomsEnglish Slang Leave my opinion