keyrevelation

noun
UK /ˌkiː rɛvəˈleɪʃən/
US /ˌkiː rɛvəˈleɪʃən/

A key revelation is a big surprise fact that helps you understand something important.

The detective's key revelation solved the whole mystery.


OTHER MEANINGS

2. A sudden understanding that unlocks a puzzle or problem.

Her key revelation about the map showed them the way home.

3. An important fact that is shared with everyone for the first time.

The scientist's key revelation about the stars amazed the class.

4. A moment when something hidden becomes clear.

The key revelation came when they opened the old box.