Demanding

The demanding boss expects employees to work overtime regularly.

Learning to play the violin is a challenging and demanding endeavor.

The strict diet and exercise regimen was demanding, but she was determined to lose weight.

The military training program is physically demanding and requires a high level of fitness.

The marathon requires demanding physical endurance.

The company is struggling to meet the demanding deadlines of its clients.

The job of an air traffic controller is highly demanding and requires intense focus.

The teacher assigned a demanding project that will test our problem-solving skills.

The customer's demanding attitude made it difficult for the salesperson to assist them.