ad lib

Meaning

adverb At pleasure.
adverb At will.
adverb As much as desired, to one's fill, without restriction.
adverb Extemporaneously.
adjective Extemporaneous, impromptu.
We were shocked to learn that the entire show was an ad lib performance. How did they weave it together so expertly on the fly?
adjective That provides as much as each one desires, to each one's fill, without restriction.
ad lib feed
noun An instance of something improvised, especially a line.
noun Improvised vocals added after the main vocals have been recorded which serve to emphasize the rhythm or fill the lyrical bar line.