How to say "watershed" in Japanese
Choosing the right word
- 分水嶺ぶんすいれいnounThe literal sense: the ridge or high ground separating one river system from another. Also used figuratively for a clear dividing line between two eras or states, keeping the geographic image.
- 天王山てんのうざんnounA figurative watershed meaning the decisive, make-or-break point of an endeavor. Used for crucial matches, elections, or negotiations where everything hinges on the outcome.
- 流域りゅういきnounThe geographic drainage area of a river — the land whose waters flow into it. For 'watershed' in this hydrological sense it is the natural choice, but it never carries the figurative 'turning point' meaning.
- 境さかいnounA boundary or dividing line, and by extension a turning point or watershed where one period or state ends and another begins. It suggests a borderlike transition rather than a dramatic crisis.
- 曲がり角まがりかどnounA 'corner' one rounds, hence a turning point or watershed in a course of events, such as a career, life, or situation reaching a new phase. Figurative only, not the geographic term.
Use 分水嶺 or 流域 for the literal geographic sense (a divide or drainage basin); for the figurative 'turning point' sense, choose 天王山, 境, or 「曲がり角」 depending on whether the moment feels decisive, boundary-like, or merely transitional.
Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only
Japanese equivalents
See also
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