ad-lib

1 of 3

verb

ad-libbed; ad-libbing

transitive verb

: to deliver spontaneously

intransitive verb

: to improvise especially lines or a speech
ad-lib noun

ad-lib

2 of 3

adjective

: spoken, composed, or performed without preparation

ad lib

3 of 3

adverb

1
: in accordance with one's wishes
2
: without restraint or limit

Examples of ad-lib in a Sentence

Verb had to ad-lib constructing a piñata because she'd never actually seen it being done Adjective not bad for an ad-lib comedy routine
Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Verb
During their jam session with Bad Bunny, the group was able to ad-lib an element unique to their hometown: the tale of Jacinto, a farmer who is dragged by his cow into a ocean blowhole, famously known as Jacinto’s pit cave. Andrea Flores, Los Angeles Times, 18 Jan. 2025 First of all, Megan gets to ad-lib every night and comes up with really funny lines every single night. Juan A. Ramírez, Vogue, 22 Nov. 2024 According to Patton Oswalt, the cast would ad-lib jokes for Reynolds to say to Blade in Snipes’s absence. Jesse David Fox, Vulture, 2 Aug. 2024 But little did Pearson know, Key would one-up these references with an ad-lib. Aaron Couch, The Hollywood Reporter, 10 Oct. 2024 McCall’s ad-lib joke about beetles (as in the insect) got them the biggest laugh. Mike Barnes, The Hollywood Reporter, 9 Aug. 2024 Once, the teleprompter unexpectedly rebooted toward the end of a speech, forcing Biden to ad-lib while his speechwriter at the time, Dylan Loewe, frantically retyped the ending in real time. Josh Dawsey, Washington Post, 4 July 2024 Hand over a prepared text to lawmakers, then ad-lib. George Skelton, The Mercury News, 29 June 2024 After Carpenter sang her cheeky ad-lib lyrics, which included a reference to the famous indoor waterfall inside Singapore's Jewel Changi shopping mall, Keoghan smiled and immediately raised his hands above his head in applause. Julia Moore, Peoplemag, 3 Mar. 2024
Adjective
At the same time, more ad-lib moments are often expected onstage, bound to keep viewers on the edge of their seats. Sabrina Park, Harper's BAZAAR, 15 Mar. 2023

Word History

Etymology

Verb

derivative of ad lib

Adjective

derivative of ad lib

Adverb

short for ad libitum entry 1

First Known Use

Verb

1910, in the meaning defined at transitive sense

Adjective

1819, in the meaning defined above

Adverb

1791, in the meaning defined at sense 1

Time Traveler
The first known use of ad-lib was in 1791

Dictionary Entries Near ad-lib

Cite this Entry

“Ad-lib.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/ad-lib. Accessed 24 Jan. 2025.

Kids Definition

ad-lib

1 of 3 verb
(ˈ)ad-ˈlib
ad-libbed; ad-libbing
: to improvise especially lines or a speech

ad-lib

2 of 3 adjective
: spoken, composed, or performed without preparation
an ad-lib speech

ad lib

3 of 3 adverb
: without restraint or limit
known for talking ad lib

Medical Definition

ad-lib

1 of 2 adjective
: made or done spontaneously : not controlled by a schedule
ad-lib feeding of animals

ad lib

2 of 2 adverb
: without restraint or imposed limit : as much or as often as is wanted
the animals were given water ad libScience
often used in writing prescriptions

More from Merriam-Webster on ad-lib

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