Definition of undertake verb from the Oxford Advanced American Dictionary

      

    undertake

     verb
    verb
    NAmE//ˌʌndərˈteɪk//
     
    (formal)Verb Forms present simple I / you / we / they undertake
     
    he / she / it undertakes
     
    past simple undertook
     
    past participle undertaken
     
    -ing form undertaking
     
     
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  1. 1undertake something to make yourself responsible for something and start doing it to undertake a task/project College professors both teach and undertake research. The company has announced that it will undertake a full investigation into the accident.
  2. 2undertake to do something undertake that… to agree or promise that you will do something He undertook to finish the job by Friday.
See the Oxford Advanced Learner's Dictionary entry: undertake