jinx; superstition; popular belief about luck
Refers to a superstition or a specific thing/action believed to bring good or bad luck, similar to the English 'jinx' but often used more broadly for any luck-related folk belief.
He believes in the jinx that a black cat crossing your path is unlucky.
試験の前には必ず同じペンを使うのが私のジンクスだ。
It's my superstition to always use the same pen before an exam.
There's a jinx that says whoever sings on this stage never wins.
He believes in the kind of jinx typical of athletes.
The team broke its long-standing jinx and advanced to the finals.
Just as the jinx predicted, it rained that year and the game was called off.