Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

English definition of “ad-lib”

ad-lib

verb [I/T]  /ˈædˈlɪb/ (-bb-) us  
to do something without preparation or planning: [I] She had lost her notes, so she ad-libbed for ten minutes.
ad-lib
adjective, adverb  /ˈædˈlɪb/ us  
I did not want to give an ad-lib speech.
(Definition of ad-lib from the Cambridge Academic Content Dictionary © Cambridge University Press)
What is the pronunciation of ad-lib?
Add Cambridge dictionaries to your browser to your website

Definitions of “ad-lib” in other dictionaries

Word of the Day

pint

a measure for liquid equal to about half a litre

Word of the Day

Blog

Read our blog about how the English language behaves.

Learn More

New Words

Find words and meanings that have just started to be used in English, and let us know what you think of them.

Learn More