undertaking

undertaking /ˈʌndɚˌteɪkɪŋ/ noun
plural undertakings
undertaking
/ˈʌndɚˌteɪkɪŋ/
noun
plural undertakings
Britannica Dictionary definition of UNDERTAKING
1 
[count] : an important or difficult task or project
2 
[noncount] : the business of an undertaker
3 
[count] British, formal : a promise or agreement to do or not do something