- 不规则 bùguīzé irregular
- 规则性 guīzéxìng regularity
- 规则化 guīzéhuà regularizationThe act or process of making something regular or systematic.
- 交通规则 jiāotōngguīzé traffic rulesthe set of laws and regulations governing the behavior of vehicles and pedestrians on public roads
- 半规则 bànguīzé quasi-regular
- 潜规则 qiánguīzé unspoken rulesunspoken rules (usually ones that codify improper behaviors such as leveraging guanxi to get favorable treatment, or coercing employees for sexual favors)
- 不规则四边形 bùguīzésìbiānxíng irregular quadrilateralA four-sided polygon whose sides and angles are not all equal, typically referring to one with no parallel sides.
- 不规则三角形 bùguīzésānjiǎoxíng scalene trianglescalene triangle (math.)