expression, godan verb (-ru)
know shame; have a sense of shame; be ashamed
Used to express that someone understands what is shameful and acts accordingly, often in negative or conditional forms to criticize shameless behavior.
あの政治家は恥を知らない。
That politician has no sense of shame.
恥を知る者なら、そんなことはしない。
Anyone who knows shame wouldn't do such a thing.