unexpectedending

noun
UK /ˌʌn.ɪkˈspek.tɪd ˈen.dɪŋ/
US /ˌʌn.ɪkˈspek.tɪd ˈen.dɪŋ/

An unexpected ending is a finish to a story that you did not think would happen.

The movie had an unexpected ending that made everyone gasp.


OTHER MEANINGS

2. A final result that is different from what was planned or predicted.

The game's unexpected ending left the fans confused.

3. A last part of an event that surprises the people involved.

The party had an unexpected ending when the lights suddenly went out.

4. A twist at the close of a story that changes how you understand it.

The book's unexpected ending made me want to read it again.