English Reference
noun

undertaking

n.
US /ˈəndɝˌteɪkɪŋ/ un·der·tak·ing UK spelling undertakings

  1. 01 B2 Upper Intermediate

    a job, task, or piece of work that is often difficult or takes a long time.

    a task, project, or enterprise, typically one that is substantial or requires significant effort.

    Simple

    Building a new house is a massive undertaking that requires careful planning.

    In context

    The restoration of the cathedral proved to be a monumental undertaking, involving hundreds of specialized craftsmen and years of meticulous labor.

  2. 02 C1 Advanced Formal Law

    a formal promise or agreement to do something.

    a formal pledge or guarantee to perform a specific action or fulfill a requirement.

    Simple

    The company gave a written undertaking that they would fix the problem.

    In context

    The defendant provided a formal undertaking to the court, promising to refrain from contacting the witnesses until the trial concluded.

    Usage

    Often followed by a 'that' clause or an infinitive.

  3. 03 C2 Proficiency Formal

    the business of managing funerals and preparing bodies for burial.

    the professional management of funeral arrangements and the disposal of the dead.

    Simple

    The family has been in the business of undertaking for three generations.

    In context

    He decided to pursue a career in undertaking, viewing the service as a vital support for grieving families in the community.

    funeral directing

Choreographed by Piet Van Dycke, the show then knuckles down to more serious tricks, with the performers undertaking a series of costume changes that are so subtle you don’t notice them at first.

The Guardian· 18 Aug 2026

Mexican authorities and researchers are working to conserve the vaquita in its native habitat before undertaking any invasive efforts to breed the animals, clone them or even move them into captivity.

Smithsonian Magazine· 14 Aug 2026

By surface analysis, undertake + -ing.

Etymology adapted from Wiktionary, available under CC BY-SA 4.0.

This entry
Level C1 · Advanced
Frequency Frequent
Updated