Present participle; Past participle - ad-libbing - ad-libbed Present - ad-lib - ad-lib - ad-libs - ad-lib - ad-lib - ad-lib Past - ad-libbed - ad-libbed - ad-libbed - ad-libbed - ad-libbed - ad-libbed Future - will ad-lib - will ad-lib - will ad-lib - will ad-lib - will ad-lib - will ad-lib Present conditional - would ad-lib - would ad-lib - would ad-lib - would ad-lib - would ad-lib - would ad-lib Present Perfect - have ad-libbed - have ad-libbed - has ad-libbed - have ad-libbed - have ad-libbed - have ad-libbed Past Perfect - had ad-libbed - had ad-libbed - had ad-libbed - had ad-libbed - had ad-libbed - had ad-libbed Future Perfect - will have ad-libbed - will have ad-libbed - will have ad-libbed - will have ad-libbed - will have ad-libbed - will have ad-libbed Past conditional - would have ad-libbed - would have ad-libbed - would have ad-libbed - would have ad-libbed - would have ad-libbed - would have ad-libbed Imperative - - - ad-lib - - - - - - - -