Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

English definition of “ad lib”

ad lib

adverb uk   us  
said without any preparation or practice: I'd forgotten the notes for my speech so I had to do it ad lib.
ad-lib
adjective [before noun] uk   us  
ad-lib comments
(Definition of ad lib adverb from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
What is the pronunciation of ad lib?
Browse related topics

You are looking at an entry to do with Not expected or planned, but you might be interested in these topics from the Thinking about the future topic area:

Add Cambridge dictionaries to your browser to your website

More meanings of “ad lib”

Definitions of “ad lib” in other dictionaries

Word of the Day

first:

(a person or thing) coming before all others in order, time, amount, quality, or importance

Word of the Day

Countability – grammar codes

by Dom Glennon​​,
November 26, 2014
Advices and informations Have you ever noticed strange codes in square brackets on entries in Cambridge Dictionaries Online and wondered what they mean? These are grammar codes, giving you a brief summary of how that word behaves grammatically. More information can be obtained by hovering your cursor over the code, and there’s

Read More 

ped-text verb

November 24, 2014
to text someone while walking I’m ped-texting, I’m looking down at my phone, 75 percent of the time.

Read More