the fact of being born to parents who are not married to each other 私生的；非婚生的 Illegitimacy no longer carries the same social stigma. 非法身份不再具有相同的社会污名。
- (formal)
the fact of not being allowed by a particular set of rules or by law 不符合规定的；非法的 democratic illegitimacy 民主的非合法性
opposite legitimacy