一いち次じ情じょう報ほう

noun

firsthand information; primary source

Refers to information obtained directly from the original source, not through intermediaries. Common in research, journalism, and business contexts.

• 記き者しゃは一いち次じ情じょう報ほうを確かく認にんしてから記き事じを書かいた。

  The reporter wrote the article after verifying the firsthand information.

• 研けん究きゅうには一いち次じ情じょう報ほうが不ふ可か欠けつだ。

  Primary sources are essential for research.