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undertake

verb

un·​der·​take ˌən-dər-ˈtāk How to pronounce undertake (audio)
undertook ˌən-dər-ˈtu̇k How to pronounce undertake (audio) ; undertaken ˌən-dər-ˈtā-kən How to pronounce undertake (audio) ; undertaking
Synonyms of undertakenext

transitive verb

1
: to take upon oneself : set about : attempt
undertake a task
undertake to learn to swim
2
: to put oneself under obligation to perform
also : to accept as a charge or responsibility
the lawyer who undertook the case
often followed by to + a verb
He undertook to raise his sister's children.
3
: guarantee, promise
… readily undertook that the letter should be securely conveyed …Sir Walter Scott

intransitive verb

archaic : to give surety or assume responsibility

Examples of undertake in a Sentence

He's undertaking a thorough search. The researchers undertook a series of studies.
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.
There are no do-overs in the music industry, but ten years later, Platten is undertaking the next best thing. Hershal Pandya, Vulture, 28 Nov. 2025 The new code has raised the threshold for requiring government permission to undertake retrenchments to 300 employees from 100 and allows states to raise that further. Priyanka Salve, CNBC, 27 Nov. 2025 The choice is fitting with the exploration Joan undertakes while trying to find love again with Luke. Alamin Yohannes, Entertainment Weekly, 27 Nov. 2025 In January 1610, articles of agreement were signed under which the twelve principal London livery companies agreed to undertake plantation in the new County of Derry (formally County Coleraine and parts of County Tyrone). Literary Hub, 25 Nov. 2025 See All Example Sentences for undertake

Word History

First Known Use

14th century, in the meaning defined at transitive sense 1

Time Traveler
The first known use of undertake was in the 14th century

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Cite this Entry

“Undertake.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/undertake. Accessed 6 Dec. 2025.

Kids Definition

undertake

verb
un·​der·​take ˌən-dər-ˈtāk How to pronounce undertake (audio)
undertook -ˈtu̇k How to pronounce undertake (audio) ; undertaken -ˈtā-kən How to pronounce undertake (audio) ; undertaking
1
: to take upon oneself as a task : enter upon
undertake a journey
2
: to take on as a duty : agree, contract
undertake to deliver a package

More from Merriam-Webster on undertake

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