開かい闢びゃく以い来らい

noun, adverb

since the beginning of the world; since the dawn of history

A formal, literary yojijukugo used to emphasize that something has been true for an extremely long time, often in historical or mythological contexts.

• 開かい闢びゃく以い来らい、この地ちには人ひとが住すんでいると言いわれている。

  It is said that people have lived in this land since the dawn of history.

• 開かい闢びゃく以い来らいの大だい事じ件けんとして記き録ろくされた。

  It was recorded as a major event unprecedented since the beginning of the world.