noun
A set of principles that is applied differently to different people or groups, often unfairly. Used in social, political, and ethical contexts.
彼の意見にはダブルスタンダードがある。
There is a double standard in his opinion.
ダブルスタンダードは不公平だと思う。
I think double standards are unfair.
Variant with interpunct; less common but still seen.
From English 'double standard'.