Primarily used in the legal phrase 公序良俗 (public order and morals). Rarely used alone outside this compound.
See also: 公序良俗
The contract was invalidated because it violated public order and morals.
法律の解釈では、公序の概念が重要な役割を果たす。
In legal interpretation, the concept of public order plays an important role.
public order and morals; social standards; public policy
Compound of 公 (public) and 序 (order). The exact historical derivation is uncertain, but the term is firmly established in modern legal Japanese.