つかtsukanomaつかのtsukanoma
1.

A fleeting period of time that is often too short to fully appreciate or grasp, signifying the transient nature of experiences.

2.

A brief interval that emphasizes the impermanence of a moment, highlighting how quickly it can pass.

3.

A short span of time, conveying a sense of something ephemeral, like a glimpse of beauty or happiness that is not meant to last.

Example:

がっかりしたことに、彼の勝利は、つかの間の勝利にすぎなかった。