Translation guide
In Japanese, expressing 'thousands of years' depends on whether you are talking about a specific number of millennia, an indefinite long span, or using it in set phrases. The most common and versatile way is 何千年 (nanzen'nen) for an indefinite 'thousands of years'. For exact counts, use [number]千年 (sen'nen). There are also idiomatic expressions like 幾千年 (ikusen'nen) and 数千年 (sūsen'nen), which are more literary or formal.
To express an unspecified period of several thousand years, often in everyday or slightly formal contexts.
The most common and neutral way to say 'thousands of years' when the exact number is unknown or unimportant. It literally means 'how many thousand years' and is used in both spoken and written Japanese.
この遺跡は何千年も前のものだ。
These ruins are from thousands of years ago.
何千年もの間、人々はこの土地で暮らしてきた。
For thousands of years, people have lived on this land.
Means 'several thousand years' or 'a few thousand years'. Slightly more formal and often used in written or academic contexts. It implies a rough estimate rather than an open-ended span.
数千年の歴史を持つ都市
a city with a history of several thousand years
A literary or poetic way to say 'thousands of years', often implying a vast, almost countless span. It can also be used in formal speeches or writings to evoke a sense of eternity.
幾千年の時を経て、その伝説は語り継がれている。
Over thousands of years, the legend has been passed down.
To state a precise number of thousands of years, such as 2000 years, 3000 years, etc.
Attach the number directly to 千年 (sen'nen). For example, 二千年 (nisen'nen) means 'two thousand years'. This is the standard way to express an exact number of millennia.
この寺院は約二千年の歴史があります。
This temple has a history of about two thousand years.
三千年以上前の文明
a civilization from over three thousand years ago
To stress that something has lasted or will last for an extremely long time, often used in vows, poetry, or dramatic statements.
Literally 'a thousand years, ten thousand years', this phrase means 'for eternity' or 'forever and ever'. It is highly emphatic and often used in blessings, curses, or poetic expressions.
この幸せが千年万年続きますように。
May this happiness last for thousands and thousands of years.
Using 幾千年 with もの間 emphasizes the vastness of the time span, similar to 'for countless millennia'. It carries a literary or solemn tone.
幾千年もの間、この山は神聖な場所とされてきた。
For thousands upon thousands of years, this mountain has been considered a sacred place.
何千年 (nanzen'nen) is the most common and neutral, used in everyday speech and writing. 数千年 (sūsen'nen) means 'several thousand years' and is slightly more formal, often seen in academic or news contexts. 幾千年 (ikusen'nen) is literary and poetic, implying a vast, almost immeasurable span. Choose based on the tone and precision you need.
千年 (sen'nen) is the counter for 'thousand years'. When combined with numbers, note the sound changes: 三千年 is read さんぜんねん (sanzen'nen), not さんせんねん. 何千年 is read なんぜんねん. The reading of 千 changes to ぜん when preceded by certain sounds.
この伝統は何千年も受け継がれてきた。
This tradition has been passed down for thousands of years.