cavalier

Anne was irritated by his cavalier attitude.

a cavalier attitude toward the suffering of others.

We're annoyed at his cavalier treatment of his old friends.

He has a cavalier attitude towards his responsibilities.

She dismissed the criticism with a cavalier wave of her hand.

The cavalier treatment of the issue angered many people.

He gave a cavalier response to their concerns.

She adopted a cavalier attitude towards the rules.

The cavalier behavior of the students in class was unacceptable.

He showed a cavalier disregard for safety precautions.

She handled the delicate situation with a cavalier attitude.

The cavalier way he spoke to his colleagues offended them.

Her cavalier treatment of the project led to its failure.