How to say "affidavit" in Japanese

• 供述きょうじゅつCommon
  noun, suru verb, transitive verbThe common term for a statement or testimony given to investigators or a court; it denotes the statement itself rather than the document, for which use 供述書.
  彼かれの供述きょうじゅつの真実性しんじつせいは疑うたがわしいと思おもう。↗

  I doubt the veracity of his statement.
• 供述書きょうじゅつしょ
  nounThe written counterpart of 供述: a statement recorded on paper, as in an investigation or court case; this is the word to use for 'affidavit' as a document.
• 口供こうきょう
  noun, suru verb, transitive verbA less common legal word for a statement in a criminal case, chiefly that of the suspect or accused; seldom the word you want for 'affidavit' — the written record is 口供書.
• 口供書こうきょうしょ
  nounThe written record of a 口供, documenting the statement of a suspect or accused person; a less common legal term, and for a written affidavit use 供述書.
• 口述書こうじゅつしょ
  nounA document that records a statement dictated orally, typically taken down in court proceedings; a less common specialized legal term, and only a loose match for 'affidavit'.

Use 供述 for the statement or testimony itself and 供述書 for the written document; the 口供 words are less common criminal-case terms, and 口述書 is a specialized term for a dictated statement.

Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only

• 供述きょうじゅつaffidavit
• 供述書きょうじゅつしょaffidavit
• 口供こうきょうaffidavit
• 口供書こうきょうしょaffidavit
• 口述書こうじゅつしょaffidavit
• 宣誓供述書せんせいきょうじゅつしょaffidavit
• 陳述書ちんじゅつしょwritten statement
• 口書きくちがきaffidavit