broadchallenge
nounUK /ˌbrɔːdˈtʃælɪndʒ/
US /ˌbrɔdˈtʃælɪndʒ/
A big problem that is hard to solve.
Cleaning up the whole park was a broadchallenge for the kids.
OTHER MEANINGS
2. A wide-ranging test of someone's skills.
The science fair was a broadchallenge for every student.
3. A large goal that needs many people to work together.
Building the new playground became a broadchallenge for the town.
4. A difficult situation that affects many areas.
Fixing the old bridge was a broadchallenge for the whole city.