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.
Hernandez, 29, a contractor based in Franklin, about 20 miles south of Nashville, undertook the $380 project with furniture from HomeGoods after seeing his pet spend most of her life tucked away in a little corner. Saman Shafiq, USA Today, 5 July 2026 Thu’s team hand-cut roughly 65 kilos of noodles, one of many marathon prep sessions undertaken in pursuit of authenticity. Karen Yuan, Vogue, 3 July 2026 Once this cycle of testing is extensively undertaken, the AI maker refines the AI and can feel more comfortable that the AI is ready for release. Lance Eliot, Forbes.com, 2 July 2026 The number of times Spain has previously undertaken mass legalization measures for immigrants living and working illegally in the country. Suman Naishadham, Los Angeles Times, 2 July 2026 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 Jul. 2026.

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

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