一いち葉よう落おちて天てん下かの秋あきを知しる

expression, godan verb (-ru)

a single leaf falls and you know autumn has come; a small sign reveals a larger trend

Proverb meaning that a small, early sign can indicate a major change or the direction of events. Often used to express that a perceptive person can foresee the future from subtle hints.

• 一いち葉よう落おちて天てん下かの秋あきを知しるというように、小ちいさな変へん化かが大おおきな流ながれを予よ感かんさせる。

  As the saying goes, a single leaf falls and you know autumn has come; a small change can herald a big shift.