Translation guide
The term 'black swan' can refer to the literal bird, a rare and unexpected event with major consequences, or a metaphorical outlier. This guide covers how to express these concepts in Japanese.
Referring to the actual black swan bird (Cygnus atratus).
The standard Japanese word for a black swan. Literally 'black bird', but specifically refers to the swan.
There is a black swan in the park pond.
Loanword from English. Used in contexts like birdwatching or when the English term is preferred.
There are many black swans in Australia.
Describing an event that is extremely rare, has severe consequences, and is often rationalized after the fact.
The English term is widely used in Japanese, especially in economics, finance, and risk management contexts, popularized by Nassim Nicholas Taleb's book.
The Lehman shock was a typical black swan event.
A literal translation sometimes used to explain the concept, but less common than the loanword. Can sound poetic or explanatory.
Means 'unexpected event' or 'event beyond assumptions'. Used in formal or technical contexts, such as risk assessment.
A descriptive phrase meaning 'rare and high-impact event'. Used when explaining the concept to someone unfamiliar with the term.
Referring to something that was once believed not to exist or be impossible, but later discovered to be real.
In Japanese business and finance, the English term 'black swan' (ブラックスワン) is well understood and commonly used. There is no need to translate it unless you are explaining the concept to a general audience.
We need risk management that prepares for black swans.
In his theory, unpredictable events like black swans change history.
This system is designed to handle even black swan events.
A black swan refers to a rare and high-impact event.
Also used in this sense, especially in discussions of epistemology or the history of science.
The black swan example illustrates the limits of induction.