mauvaise

In a sentence

• C'est une mauvaise idée de sortir sous la pluie.

  It's a bad idea to go outside in the rain.

  The word 'mauvaise' (bad) is used as an adjective to modify 'idée' (idea), describing the nature of the idea as being unfavorable or not good.

• Elle a eu une mauvaise note à l'examen.

  She got a bad grade in the exam.

  Here, 'mauvaise' serves as an adjective describing 'note' (grade), indicating that the grade obtained was unsatisfactory or below expectation.

• Un acte de vengeance est souvent considéré comme une mauvaise action.

  An act of revenge is often considered a bad deed.

  In this example, 'mauvaise' is an adjective qualifying 'action' (deed), implying that the deed performed is considered morally or ethically incorrect.