Did you know?

Click any word in a definition or example to find the entry for that word

undertake - definition and synonyms


What are red words?

90% of the time, speakers of English use just 7,500 words in speech and writing. These words appear in red, and are graded with stars. One-star words are frequent, two-star words are more frequent, and three-star words are the most frequent.



The thesaurus of synonyms and related words is fully integrated into the dictionary. Click on the thesaurus category heading under the button in an entry to see the synonyms and related words for that meaning.

verb [transitive] undertake pronunciation in British English /ˌʌndə(r)ˈteɪk/
Word Forms
present tense
present participleundertaking
past tenseundertook
past participleundertaken
  1. 1
    to agree to be responsible for a job or a project and do it
    The court will undertake a serious examination of the case.
    The most recent survey of rare birds was undertaken in 1991.
    It is one of the largest dam projects ever undertaken.
  2. 2
    formal to promise to do something
    undertake to do something: The government has undertaken to tackle unemployment as a priority.
    To join the club, you have to undertake to buy a minimum of six books a year.
    Synonyms and related words


… a feeling of pleasure you get from spending time doing what you want and not worrying about what other people are doing or saying

BuzzWord Article

Word of the Day

Mardi Gras

shrove tuesday

Open Dictionary

brain fade

a temporary inability to think clearly or remember information

add a word


A must for anyone with an interest in the changing face of language. The Macmillan Dictionary blog explores English as it is spoken around the world today.

global English and language change from our blog