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verb

undertake

/ˌʌndərˈteɪk/  ·  say it: UN·der·TAYK

to commit to and begin a task

In Actions & Behavior

In more detail

1. (verb) to agree to do something or accept responsibility for something

2. (verb) to start or begin a task, project, or journey

Examples

How to use undertake

Undertake is a formal or semi-formal verb meaning to commit oneself to doing something or to begin an activity. It emphasizes acceptance of responsibility and commitment, making it stronger than simple 'do' or 'start.' It is commonly used in professional, academic, and official contexts when describing substantial initiatives or obligations.

Register: formal

Common phrases

Synonyms

assume · take on · begin · start · commence

Opposites

abandon · neglect

Word family

undertaker · undertaken · undertaking

A common mistake

Learners sometimes use undertake as if it were reflexive (undertake oneself), but the correct form is simply undertake + object, as in 'undertake a project' not 'undertake oneself to a project.'

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