- 1to say something in a speech or a performance that you have not prepared or practiced synonym improvise
- 2 She abandoned her script and began ad libbing. ad lib something I lost my notes and had to ad lib the whole speech. He ad libbed his way through the meeting.
NAmE//ˌæd ˈlɪb//[intransitive, transitive]Verb Forms present simple I / you / we / they ad lib he / she / it ad libs past simple ad libbed -ing form ad libbing
The speech was full of ad libs.
ad lib nounjump to other results
an ad lib speech
ad lib adjectivejump to other results
She delivered her lines ad lib.
ad lib adverbjump to other results