foirer

In a sentence

• Je ne veux pas foirer cet examen important.

  I don't want to mess up this important exam.

  Here, 'foirer' represents the act of not succeeding or failing at something, colloquial for 'mess up'.

• Il a foiré sa présentation à cause du stress.

  He screwed up his presentation due to stress.

  In this context, 'foirer' is used informally to indicate an unintentional failure or error in performing an action.

• Si nous ne planifions pas bien, nous allons foirer le projet.

  If we don't plan well, we will botch the project.

  This sentence uses 'foirer' to imply the risk of poorly executing or failing to achieve a desired outcome due to lack of preparation.