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ad-lib

[ad-lib, ad-] /ædˈlɪb, ˈæd-/
verb (used with object), ad-libbed, ad-libbing.
1.
to improvise all or part of (a speech, a piece of music, etc.):
to ad-lib one's lines.
verb (used without object), ad-libbed, ad-libbing.
2.
to act, speak, etc., without preparation:
Throughout the play he had to ad-lib constantly.
adjective
3.
impromptu; extemporaneous:
ad-lib remarks to hecklers.
Origin
1915-1920
1915-20, Americanism; v. use of ad lib
Related forms
ad-libber, noun
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for ad lib bed

ad-lib

/ædˈlɪb/
verb -libs, -libbing, -libbed
1.
to improvise and deliver without preparation (a speech, musical performance, etc)
adjective (ad lib when predicative)
2.
improvised; impromptu
adverb
3.
without restraint; freely
4.
(music) short for ad libitum
noun
5.
an improvised performance, often humorous
Derived Forms
ad-libber, noun
Word Origin
C18: short for Latin ad libitum, literally: according to pleasure
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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