口こう述じゅつ書しょこうじゅつしょMeanings1nounaffidavitA written statement confirmed by oath or affirmation, for use as evidence in court. This is a formal legal term.裁さい判ばん所しょに口こう述じゅつ書しょを提てい出しゅつした。I submitted an affidavit to the court.