I. (ˈ) ̷ ̷| ̷ ̷ adjective
1. : spoken or composed extempore
free and easy ad-lib questioning — New York Times
2.
a. : available for free or spontaneous use or consumption
dinner, with wine ad-lib — Bernard Smith
b. : made or done spontaneously : not controlled by a schedule
ad-lib feeding of animals
II. (ˈ) ̷ ̷ˈ ̷ ̷ verb
( ad-libbed ; ad-libbed ; ad-libbing ; ad-libs )
transitive verb
1.
a. : to improvise as a part of something (as lines not in the script or music not in the score)
b. : to improvise all of (as a speech or a dance)
2. : to devise (something) impromptu : employ offhand (as a makeshift)
without spare parts the repairmen had to ad-lib material
intransitive verb
: to improvise or deliver extempore especially for filling in during a break in a program