serendipity.

1. Noun

   good luck in making unexpected and fortunate discoveries

Open English WordNet · CC BY 4.0. Attribution and changes.

1. Nouncountableuncountable

   The phenomenon of making an unplanned, fortunate discovery through a combination of unexpected circumstances and insightful recognition.

2. Nouncountableuncountable

   An unsought, unintended or unexpected, but fortunate, discovery or learning experience that occurs by accident.

3. Nouncountableuncountable

   The occurrence and development of events by chance in a happy or beneficial way.

Wiktionary contributors · CC BY-SA 4.0. Attribution and changes.