This informal meaning refers to impudent or disrespectful speech, especially toward someone in authority.
Do not give your teacher that sass.
His constant sass annoyed the manager.
This positive informal use refers to energetic confidence, personality, and bold style.
The performance had humor and sass.
She wore the outfit with plenty of sass.
As a verb, sass means replying with disrespectful, bold, or cheeky language.
Do not sass your parents.
The student sassed the coach during practice.
