mysteryword

noun
UK /ˈmɪstəri wɜːd/
US /ˈmɪstəri wɜːrd/

A mysteryword is a secret word you have to guess.

The teacher gave us a mysteryword puzzle to solve before lunch.


OTHER MEANINGS

2. A word whose meaning is unknown or unclear.

That old poem is full of mysterywords nobody can explain.

3. A password or code word kept secret.

Only members know the mysteryword to enter the clubhouse.

4. A word in a game that players must discover from clues.

Each round, the mysteryword gets harder to guess.