undertake

verb

un·​der·​take ˌən-dər-ˈtāk 

undertook ˌən-dər-ˈtu̇k  ; undertaken ˌən-dər-ˈtā-kən  ; 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 conveyed

—Sir Walter Scott

intransitive verb

archaic : to give surety or assume responsibility

Synonyms

• accept
• assume
• bear
• shoulder
• take over

Examples of undertake in a Sentence

He's undertaking a thorough search.

The researchers undertook a series of studies.

Recent Examples on the Web

The buyer will undertake a careful review of the selling company’s involvement in any current or past IP litigation or other disputes. —Allbusiness, Forbes, 11 Jan. 2025

The more responsible path is to undertake cautious but constructive engagement, aiming to rebalance trade, ratchet down geopolitical tension, and carve out a working relationship on issues such as technological competition and global health—all while preserving a stable status quo on Taiwan. —Charles A. Kupchan, The Atlantic, 10 Jan. 2025

The Wolf, began last year and is the first extensive trek Travis had undertaken since having a stroke in 2013. —Sean Clancy, arkansasonline.com, 9 Jan. 2025

The high-elevation journey is undertaken by a team of little red trains. —Evie Carrick, Travel + Leisure, 8 Jan. 2025

Word History

First Known Use

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

Kids Definition

undertake

verb

un·​der·​take ˌən-dər-ˈtāk 

undertook -ˈtu̇k  ; undertaken -ˈtā-kən  ; 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