1.
rule, regulation
An established principle or guideline that governs behavior or procedures.
Related Words
Synonym:
ルール (rule (casual, loanword))
Synonym:
決まり (rule (less formal))
Synonym:
規約 (terms, bylaws (specific))
Compare:
法律 (law)
Compare:
定め (fate)
Related:
条例 (ordinance)
Compare:
掟 (rule, code, law)
Compare:
ルールブック (rulebook)