fluke

Definitions

An unlikely chance occurrence, especially a surprising piece of luck.

The broad, triangular lobe of a whale's tail.

The triangular blade of an anchor.

Examples

His victory in the tournament was considered a total fluke by his competitors.

I managed to solve the complex puzzle on my first try, but it was just a fluke.

Synonyms

stroke of luck accident coincidence serendipity chance occurrence fortuitous event happy accident

Antonyms

certainty design plan intent deliberate act foregone conclusion calculated result