Dictionary

1ad–lib

verb \ˈad-ˈlib\

: to make up words or music in a performance instead of saying or playing something that has been planned

ad–libbedad–lib·bing

Full Definition of AD-LIB

transitive verb
:  to deliver spontaneously
intransitive verb
:  to improvise especially lines or a speech
ad–lib noun

Origin of AD-LIB

ad lib
First Known Use: 1919

2ad–lib

adjective

Definition of AD-LIB

:  spoken, composed, or performed without preparation

First Known Use of AD-LIB

1935

ad–lib

adjective \(ˈ)ad-ˈlib\   (Medical Dictionary)

Medical Definition of AD–LIB

:  made or done spontaneously :  not controlled by a schedule <ad–lib feeding of animals>

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