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Citation Information
How to Cite
Manser, Martin H. "ad lib." Writer's Reference Center. Facts On File, Inc. Web. 18 Apr. 2025. <http://fofweb.infobase.com/wrc/Detail.aspx?iPin=FWP000054>.
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ad lib

Pronunciation pronunciation key
ad lib, ad-lib

Function
adverb phrase

Definition 
without restraint, spontaneously.
adjective phrase unrestrained, spontaneous.
verb to deliver a spontaneous, extemporized speech or performance: "The actors were forced to ad lib until the stagehands could free the jammed curtain."
noun something said, written, or done spontaneously.

Etymology etymology key
abbreviation of ad libitum at pleasure

Word or Phrase Origin
Latin

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