sudden understanding

noun phrase
UK /ˈsʌdən ˌʌndəˈstændɪŋ/
US /ˈsʌdən ˌʌndərˈstændɪŋ/

A sudden understanding is when you get what something means all at once, like a light turning on in your head.

After staring at the puzzle for ten minutes, she had a sudden understanding of how the pieces fit together.


OTHER MEANINGS

2. A quick grasp of a tricky idea that comes without warning.

His sudden understanding of the math problem made him smile.

3. The moment you finally see why something happened.

She had a sudden understanding of why her friend had been so quiet.

4. A fast, clear realization that changes how you think about something.

The sudden understanding that the map was upside down solved everything.