keypurpose
nounUK /ˈkiːˌpɜːpəs/
US /ˈkiːˌpɝːpəs/
The main reason you do something.
The keypurpose of a school is to help kids learn.
RELATED WORDS
OTHER MEANINGS
2. The most important job a tool or object is made to do.
The keypurpose of an umbrella is to keep you dry.
3. The reason a plan or project exists.
The keypurpose of our club is to clean up the park.
4. The main point someone is trying to make.
The keypurpose of her speech was to say thank you.