blackguard
/ˈblæɡəd/
noun
Meaning
(old-fashioned, usually used only of men) A scoundrel; an unprincipled contemptible person; an untrustworthy person.
A man who uses foul language in front of a woman, typically a woman of high standing in society.
verb
Meaning
To revile or abuse in scurrilous language.
To act like a blackguard; to be a scoundrel.