surprise ending

noun
UK /səˈpraɪz ˈɛndɪŋ/
US /sərˈpraɪz ˈɛndɪŋ/

An ending that you did not expect at all.

The movie had a surprise ending that made everyone gasp.


OTHER MEANINGS

2. A final part of a story that is kept secret until the very last moment.

The author saved the surprise ending for the last page.

3. A result in a game or contest that nobody predicted.

The championship match had a surprise ending when the underdog team won.

4. A funny or clever last line in a joke that makes people laugh.

The comedian's joke had a surprise ending that caught everyone off guard.