千せん古こ

noun, adverb

all ages; great antiquity; eternity

Refers to a very long span of time, from ancient times to the present, or the distant past. Often used in literary or formal contexts to emphasize timelessness or historical depth.

• この伝でん統とうは千せん古この昔むかしから続つづいている。

  This tradition has continued since ancient times.

• 彼かれの功こう績