stressant

In a sentence

• Ce travail est très stressant.

  This work is very stressful.

  Here, 'stressant' is used as an adjective to describe the nature of the work (masculine singular), emphasizing the idea that it causes stress to the person doing it.

• La situation devient vraiment stressante.

  The situation is becoming really stressful.

  In this case, 'stressant' is applied as an adjective (feminine singular) to describe the evolving or current nature of the situation, conveying the idea that it induces stress.

• Il trouve ces examens particulièrement stressants.

  He finds these exams particularly stressful.

  Here, 'stressant' serves as an adjective (masculine plural) to specify the stressful nature of the exams from the perspective of the person experiencing it.