adlib

Universal Words verb (-bb-) to say sth in a speech or a performance that you have not prepared or practised SYNIMPROVISE: [V] The pair have often been known to abandon their script and begin ad libbing. * [VN] I lost my notes and had to ad lib the whole speech. * He ad libbed his way through the meeting. ad lib noun: The speech was full of ad libs and witty asides. ad lib adjective: an ad lib speech ad lib adverb: She delivered her lines ad lib.