noun
informality; breach of etiquette
Formal or legal term for a violation of prescribed form or manners; often used in official contexts such as 違式行為 (act of informality) or 違式裁判 (summary court for minor offenses).
違式行為として罰金を科せられた。
He was fined for an act of informality.
違式裁判で処理される軽微な違反もある。
Some minor violations are handled by summary court.
Compound of 違 (i, 'to differ, violate') and 式 (shiki, 'form, ceremony, rule'). The exact historical derivation is uncertain; the term is used in legal and formal contexts.