major undertaking
noun phraseUK /ˈmeɪ.dʒə ˌʌn.dəˈteɪ.kɪŋ/
US /ˈmeɪ.dʒɚ ˌʌn.dɚˈteɪ.kɪŋ/
A very big job that takes a lot of work.
Building the new school was a major undertaking.
RELATED WORDS
OTHER MEANINGS
2. A serious promise to do something important.
Learning to swim was a major undertaking for the little boy.
3. A long and difficult piece of work.
Cleaning the whole attic was a major undertaking.
4. Something that needs lots of people and time to finish.
Putting on the school play was a major undertaking for the class.