hardriddle
nounUK /ˈhɑːdˌrɪdəl/
US /ˈhɑːrdˌrɪdəl/
A hard riddle is a puzzle that is very difficult to solve.
The teacher gave us a hardriddle that took the whole class an hour to figure out.
OTHER MEANINGS
2. A question or problem that requires clever thinking to answer.
Solving that hardriddle required thinking outside the box.
3. Something confusing or difficult to understand.
The instructions were a real hardriddle for everyone.
4. A tricky game or challenge meant to test your wits.
We played a hardriddle game at the birthday party.