- 規則【きそく】 - rule, regulation 
- 反則【はんそく】 - foul, breaking the rules, violation (of the law, regulations, etc.), infringement, breach, infraction 
- 法則【ほうそく】 - law, rule 
- 原則【げんそく】 - principle, general rule, as a rule, in principle, in general 
- 罰則【ばっそく】 - punishment, penalty, penal regulations, penal provisions, penal code 
- 校則【こうそく】 - school rules, school regulations 
- 不規則【ふきそく】 - irregularity, unsteadiness, disorderly 
- 会則【かいそく】 - society regulations, club regulations, constitution 
- 変則【へんそく】 - irregularity, anomaly 
- 正則【せいそく】 - correct, proper, formal, regular, systematic, normal, invertible (matrix), holomorphic 
- 鉄則【てっそく】 - ironclad rule, inviolable rule, invariable principle, iron law 
- 本則【ほんそく】 - rules, original rules 
- 付則【ふそく】 - additional rules, by-laws, supplementary provisions, additional clauses 
- 規則的【きそくてき】 - systematic, regular, routine 
- 細則【さいそく】 - by-laws, detailed regulations 
- 雑則【ざっそく】 - miscellaneous rules, miscellaneous provisions 
- 学則【がくそく】 - school regulations 
- 教則本【きょうそくぼん】 - manual, practice book