ad lib

/æd ˈlɪb//ˈæd ˈlɪb/

adverb

At pleasure.

Meanings

adverbad lib (comparative more ad lib, superlative most ad lib)

comparative more ad lib · superlative most ad lib · alternative adverb ad lib. · alternative noun verb ad-lib · alternative noun verb adlib

  1. 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.

    1951, Katherine Mansfield, Letters to John Middleton Murry, 1913-1922
adjectivead lib (comparative more ad lib, superlative most ad lib)

comparative more ad lib · superlative most ad lib · alternative adverb ad lib. · alternative noun verb ad-lib · alternative noun verb 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. That provides as much as each one desires, to each one's fill, without restriction.

    ad lib feed

    4 more examples

    ad lib access

    ad lib feeder

    All hens in the laying house have ad lib access to feed.

    The patients in the control group had ad lib access to snacks and were given no extra dietary advice.

nounad lib (plural ad libs)

plural ad libs · alternative adverb ad lib. · alternative noun verb ad-lib · alternative noun verb adlib

  1. actingAn instance of something improvised, especially a line.
  2. dancingImprovised vocals added after the main vocals have been recorded which serve to emphasize the rhythm or fill the lyrical bar line.
verbad lib (third-person singular simple present ad libs, present participle ad libbing, simple past and past participle ad libbed)

present singular third person ad libs · participle present ad libbing · participle past ad libbed · past ad libbed · alternative adverb ad lib. · alternative noun verb ad-lib · alternative noun verb adlib

  1. To perform without a script.

    Synonyms: fake

  2. To perform without preparation.
  3. To perform extemporaneously.

    She ad libbed the rest of the scene.

  4. intransitivechiefly hip hopentertainmentTo perform ad libs; to improvise lyrics after the main lyrics have been recorded.
  5. transitivechiefly hip hopentertainmentTo perform (lyrics) as ad libs.

Synonyms & antonyms

adverbAt pleasure.

Similar

adverbExtemporaneously.

verbTo perform without a script.

Similar

More synonyms by meaning

adverbwithout advance preparation

Synonym sets from Open English WordNet, CC BY 4.0.

Origin

  1. New Latinad libitum
  2. Englishad lib

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

Full word history & related roots →

Translations

French ad libitum, à discrétion
  • ad libitumat will
  • à discrétionas much as desired, without restriction
  • ad libitumas much as desired, without restriction
  • improviserto perform without preparation
  • improviserto perform extemporaneously
  • improviserto perform without script
German beliebig, nach Herzenslust
  • beliebigat pleasure
  • nach Herzenslustat pleasure
  • nach Beliebenat pleasure
  • beliebigat will
  • improvisiertextemporaneously
  • improvisiertextemporaneous
  • unvorbereitetextemporaneous
  • improvisierento perform without preparation
  • improvisierento perform extemporaneously
  • improvisierento perform without script
Hungarian tetszés szerint
  • tetszés szerintat pleasure
Portuguese à vontade, à vontade
  • à vontadeat pleasure
  • à vontadeat will
  • improvisadoextemporaneous
  • improvisarto perform without preparation
  • improvisarto perform extemporaneously
  • improvisarto perform without script
Russian как уго́дно, по жела́нию
  • как уго́дно (kak ugódno)at pleasure
  • по жела́нию (po želániju)at will
  • ско́лько уго́дно (skólʹko ugódno)as much as desired, without restriction
  • экспро́мтом (eksprómtom)extemporaneously
Spanish ad libitum, ad líbitum
  • ad libitumat pleasure
  • ad líbitumat pleasure
  • ad libitumat will
  • ad líbitumat will
  • improvisadoextemporaneous
  • improvisarto perform without preparation
  • improvisarto perform extemporaneously
  • improvisarto perform without script
Thai พูดกลอนสด
  • พูดกลอนสด (pôot glon sòt)extemporaneously
Cite this entry
APA

ad lib. (n.d.). In WatkinsX Dictionary. Retrieved November 3, 2026, from https://dictionary.watkinsx.com/word/ad%20lib

MLA

“ad lib.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/ad%20lib. Accessed November 3, 2026.

Chicago

WatkinsX Dictionary, s.v. “ad lib,” accessed November 3, 2026, https://dictionary.watkinsx.com/word/ad%20lib.

Source: ad lib on Wiktionary, CC BY-SA 4.0.