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ad hoc
ad hoc committee
ad hocism
ad hominem
ad impression
ad infinitum
ad interim
ad lib
ad-lib
ad libitum
ad litem
ad nauseam
ad rem
ad rotation
ad space
ad val.
ad valorem
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ad-lib

ad-lib [ àd líb ]


transitive and intransitive verb  (past and past participle ad-libbed, present participle ad-lib·bing, 3rd person present singular ad-libs)
Definition:
 
improvise speech or performance: to make up a speech or a musical or dramatic performance on the spot without a fixed text or score



adjective 
Definition:
 
unplanned: improvised or made up on the spot



noun  (plural ad-libs)
Definition:
 
improvised part of performance: something said by an actor or other performer that is not in the script


ad-lib·ber noun
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