ad lib

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ad lib

  • /æd ˈlɪb/
  • /ˈæd ˈlɪb/

Where it comes from

Abbreviation of ad libitum, borrowed from New Latin ad libitum.

adverb more ad lib · most ad lib · ad lib. · ad-lib · adlib

  1. At pleasure.

    Similar: a piacere

  2. At will.
  3. As much as desired, to one's fill, without restriction. For one thing I had a splendid supper when I got on board—a whack of cold, lean beef and pighells, bread, butter ad lib., tea, and plenty of good bread.
  4. Extemporaneously.

    Similar: ex tempore, extempore, impromptu, on the fly

adjective more ad lib · most ad lib · ad lib. · ad-lib · adlib

  1. 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?
  2. of feed or food access for livestock or humans That provides as much as each one desires, to each one's fill, without restriction. ad lib feed

noun ad libs · ad lib. · ad-lib · adlib

  1. An instance of something improvised, especially a line.
  2. Improvised vocals added after the main vocals have been recorded which serve to emphasize the rhythm or fill the lyrical bar line.

verb ad libs · ad libbing · ad libbed · ad lib. · ad-lib

  1. To perform without a script.

    Similar: fake

  2. To perform without preparation.
  3. To perform extemporaneously. She ad libbed the rest of the scene.
  4. intransitive To perform ad libs; to improvise lyrics after the main lyrics have been recorded.
  5. transitive To perform (lyrics) as ad libs.

Translations

Every language

adv at pleasure

Españolad libitum, ad líbitum
Portuguêsà vontade
Deutschbeliebig, nach Herzenslust, nach Belieben
Русскийкак уго́дно kak ugódno

adv at will

Españolad libitum, ad líbitum
Portuguêsà vontade
Françaisad libitum
Deutschbeliebig
Русскийпо жела́нию po želániju

adv as much as desired, without restriction

Françaisà discrétion, ad libitum
Русскийско́лько уго́дно skólʹko ugódno

adv extemporaneously

Deutschimprovisiert
Русскийэкспро́мтом eksprómtom

adj extemporaneous

Españolimprovisado
Portuguêsimprovisado
Deutschimprovisiert, unvorbereitet

verb to perform without script

Españolimprovisar
Portuguêsimprovisar
Françaisimproviser
Deutschimprovisieren

verb to perform without preparation

Españolimprovisar
Portuguêsimprovisar
Françaisimproviser
Deutschimprovisieren

verb to perform extemporaneously

Españolimprovisar
Portuguêsimprovisar
Françaisimproviser
Deutschimprovisieren

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Cite this
MLA

"ad lib." Wiktionary, via Micwyn, micwyn.com/word/ad%20lib. Accessed 6 Nov. 2026.

APA

ad lib. (n.d.). In Wiktionary, via Micwyn. Retrieved November 6, 2026, from https://micwyn.com/word/ad%20lib

Chicago

"ad lib." Wiktionary, via Micwyn. Accessed November 6, 2026. https://micwyn.com/word/ad%20lib.

BibTeX
@misc{ad_lib_2026,
  title = {ad lib},
  howpublished = {Wiktionary, via Micwyn},
  year = {2026},
  url = {https://micwyn.com/word/ad%20lib},
  urldate = {2026-11-06}
}