undertaking

/ˌʌndərˈteɪkɪŋ/
noun
  1. A task, project, or job that is difficult or important.
    • The rescue mission was a massive undertaking that required months of planning.
    • Starting her own business was a risky undertaking.
    • Building a house by yourself is a huge undertaking.
  2. A formal promise or guarantee to do something.
    • The company gave a written undertaking to reduce pollution.
    • He made an undertaking to finish the report by Friday.
    • The government's undertaking to improve roads was welcomed by drivers.
  3. The business of preparing dead bodies for burial and organizing funerals.
    • His grandfather owned an undertaking company in the small town.
    • The family chose a local undertaking firm to handle the arrangements.
    • She has worked in the undertaking business for over twenty years.