undertake
Americanverb (used with object)
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to take upon oneself, as a task, performance, etc.; attempt.
She undertook the job of answering all the mail.
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to promise, agree, or obligate oneself (followed by an infinitive).
The married couple undertook to love, honor, and cherish each other.
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to warrant or guarantee (followed by a clause).
The sponsors undertake that their candidate meets all the requirements.
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to take in charge; assume the duty of attending to.
The lawyer undertook a new case.
verb (used without object)
verb
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(tr) to contract to or commit oneself to (something) or (to do something)
to undertake a job
to undertake to deliver the goods
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(tr) to attempt to; agree to start
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(tr) to take (someone) in charge
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archaic to make oneself responsible (for)
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(tr) to promise
Other Word Forms
Etymology
Origin of undertake
First recorded in 1150–1200; Middle English undertaken; see under-, take
Explanation
When you undertake a task or challenge, you attempt to accomplish it. If you want to undertake a verbal challenge right now, try saying “sushi chef” ten times quickly without messing up. Way back in the 13th century, undertake meant “seize” or “entrap.” Of course, the meaning has shifted significantly since then, and we hope you don’t feel entrapped when you decide to undertake a project. However, undertake does convey a level of commitment and involvement that’s somewhat stronger than the words try or attempt might suggest.
Vocabulary lists containing undertake
The Vocabulary.com Top 1000
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Franklin D. Roosevelt, "A Date That Will Live In Infamy" (1941)
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The Mayflower Compact (1620)
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Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
It might be similar to the institution-building in the first years of the Federal Republic of Germany, or what the new government of Hungary must now undertake.
From Salon • May 18, 2026
The bank made clear in a 2024 memorandum to staff that the Budapest analysts “are not licensed to undertake any regulated activities,” including direct contact with clients and any handling of know-your-customer processes.
From The Wall Street Journal • May 5, 2026
Mr. Warsh promised to undertake a major “data project” regarding inflation soon after taking office if confirmed.
From The Wall Street Journal • Apr. 23, 2026
BlackRock said it would undertake $450 million in share repurchases in the current quarter and deliver a 10% increase in quarterly cash dividend to $5.73 per share.
From MarketWatch • Apr. 14, 2026
But his affection for me at length overcame his dislike of learning, and he has permitted me to undertake a voyage of discovery to the land of knowledge.”
From "Frankenstein" by Mary Shelley
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
