по-мужски

like a man

→ по
phrase Rare #45,827
like a man Often suggests behaving courageously, honorably, or in a way considered traditionally masculine.
RU: Он признал свою ошибку по-мужски.
EN: He admitted his mistake like a man.

Александр, это не по-мужски.

Alexander, this is not manly.

— Мой друг Иван Лапшин (1985)