Translation guide
In Japanese, the concept of 'a thousand years' is most commonly expressed with the word 千年 (sennen). It can be used literally for a millennium, or figuratively to mean 'a very long time'. There are also more poetic or literary expressions, and some set phrases.
Referring to an actual span of 1000 years, such as in history or future projections.
The standard word for 'a thousand years' or 'millennium'. Used in both spoken and written Japanese.
This temple was built over a thousand years ago.
A once-in-a-millennium festival was held.
Literally 'one thousand years'. Slightly more emphatic or formal than 千年 alone. Often used in historical or scientific contexts.
After a thousand years, the document was discovered.
Loanword from English 'millennium'. Used mainly in modern or Western contexts, like the turn of the millennium.
Events celebrating the millennium were held in various places.
Expressing that something feels like it lasts forever, or has existed for an extremely long time.
Adding も to 千年 emphasizes the length, like 'as long as a thousand years' or 'for a thousand years (and still...)'. Often used in emotional or poetic statements.
I feel like I've been waiting for you for a thousand years.
A poetic phrase meaning 'across a thousand years' or 'transcending a millennium'. Used in songs, literature, or dramatic speech.
Fixed expressions where 'thousand years' is part of a larger meaning.
A four-character idiom meaning 'a thousand years like a single day'. Describes a long period that feels short, or something unchanging over time.
His life of research continued as if a thousand years were but a single day.
A proverb: 'Cranes live a thousand years, turtles ten thousand years.' Used to wish someone a long life.
While 千年 means 'a thousand years', the English word 'millennium' often refers specifically to the turn of the millennium (year 2000) or a future thousand-year period in a Western cultural sense. In such cases, ミレニアム is more natural. 千年 is better for general spans of 1000 years.
Across a thousand years, love lives on.
An ancient, highly poetic phrase from the Japanese national anthem and classical poetry, meaning 'for a thousand generations, for eight thousand generations' – essentially 'for eternity'. Not used in daily conversation.
May your reign last for a thousand, for eight thousand generations.
Grandpa, they say cranes live a thousand years and turtles ten thousand, so stay healthy for a long time yet.