ad lib Meaning in the Cambridge English Dictionary

Meaning of “ad lib” in the English Dictionary

"ad lib" in British English

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ad libadverb

uk   us  
said without any ​preparation or ​practice: I'd ​forgotten the ​notes for my ​speech so I had to do it ad ​lib.
adjective [before noun] uk   us  
ad-lib ​comments

ad-libverb [I or T]

uk   us   /ˌædˈlɪb/ (-bb-)
to ​speak in ​public without having ​planned what to say: She ad-libbed her way through the ​entirespeech.
(Definition of ad lib from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)

"ad-lib" in American English

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ad-libverb [I/T]

 us   /ˈædˈlɪb/ (-bb-)
to do something without ​preparation or ​planning: [I] She had ​lost her ​notes, so she ad-libbed for ten ​minutes.
adjective, adverb  us   /ˈædˈlɪb/
I did not ​want to give an ad-lib ​speech.
(Definition of ad-lib from the Cambridge Academic Content Dictionary © Cambridge University Press)
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“ad lib” in British English

“ad lib” in American English

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