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

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
3
: guarantee, promise
readily undertook that the letter should be securely conveyedSir 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.
This article is a must read for anyone undertaking anticolonial study. JSTOR Daily, 11 Oct. 2025 Will undertake concrete actions to rebuild trust. Jillian Frankel, PEOPLE, 10 Oct. 2025 Uribe could undertake a multi-inning assignment on Saturday; catcher William Contreras joked that Uribe would be willing to start if asked. Andy McCullough, New York Times, 10 Oct. 2025 Broadly, NIDs are authorized to undertake improvement, maintenance and promotional efforts. April Quevedo, jsonline.com, 9 Oct. 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

Browse Nearby Words

Cite this Entry

“Undertake.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/undertake. Accessed 16 Oct. 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

Last Updated: - Updated example sentences
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!