rebellious; defiant
Describes an attitude or behavior that openly resists authority, rules, or expectations. Often used for teenagers, subordinates, or political stances.
More students are taking a defiant attitude.
彼は親に反抗的な口をきいた。
He talked back to his parents rebelliously.
He took a defiant attitude toward the teacher.
My daughter has recently become rebellious toward her parents.
He glared at his boss with a defiant look.