Proverb / Kotowaza
一葉落ちて天下の秋を知る
Detecting a large trend or predicting the future from a small, subtle sign.
Seeing a single leaf fall and knowing that autumn has arrived throughout the land.
Quick Answer
Detecting a large trend or predicting the future from a small, subtle sign.
- Literal Image
- Seeing a single leaf fall and knowing that autumn has arrived throughout the land.
- Closest Equivalent
- A straw shows which way the wind blows.
- How to Use It
- This proverb is used when someone observes a small change or event and correctly predicts a larger outcome or general trend based on that observation.
Meaning
This expression describes how observing a single falling leaf (specifically from a paulownia tree) allows one to realize that the season has changed to autumn. It serves as a metaphor for noticing a minor phenomenon to understand the broader situation or anticipate future developments. It emphasizes the importance of paying attention to early signals before a major shift occurs.
Literal Image
Seeing a single leaf fall and knowing that autumn has arrived throughout the land.
Equivalent Proverbs
A straw shows which way the wind blows.
Both suggest that small things indicate larger movements.
How to Use It
This proverb is used when someone observes a small change or event and correctly predicts a larger outcome or general trend based on that observation.
Tone
Literary and insightful.
Examples
売上がわずかに減少した段階で手を打った。一葉落ちて天下の秋を知るだ。
I took action as soon as sales decreased slightly. It was a case of seeing one leaf fall and knowing autumn is coming.
小さな兆候から全体の変化を読み取るのは、一葉落ちて天下の秋を知るに通じる。
Reading the change of the whole from small signs is the essence of 'seeing a single leaf fall and knowing autumn is here'.
一葉落ちて天下の秋を知るように、初期のシグナルを見逃さないことが大切だ。
Just as one knows autumn from a single falling leaf, it is important not to miss the initial signals.
Learning Notes
Key Vocabulary
Uses literary grammar structures and formal vocabulary that require advanced proficiency to fully parse and understand.
一葉
いちよう / ichiyo
a single leaf
天下
てんか / tenka
the whole world; the entire land
秋
あき / aki
autumn
知る
しる / shiru
to know; to realize
Usage Profile
Usage note: This is a sophisticated expression; using it in very casual conversation might feel overly formal or stiff.
Misread Risk
Do not assume this only applies to the literal season of autumn; it is a general metaphor for foresight and identifying trends.
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Source Note
Where did this entry get its data from? The reference links are listed below. To understand how to read this section, see Data Sources.