はかない
はかない · hakanai · JLPT N1 · i-adj
short-lived
🫧🌸 Etymology: はか (measure) + ない (not) = too brief to measure, so fleeting
The kanji 儚い points to the same root: something that cannot be measured in time. Cherry blossoms and soap bubbles are hakanai because they last too briefly to count.