decisive factor

• La raison ou l'élément le plus important qui détermine l'issue d'une situation, d'une décision ou d'un événement.

The single most important reason or element that determines the outcome of a situation, decision, or event.

1. Key determining elementB2formal

   The most important element or reason that determines the outcome of a situation or decision.

   facteur décisif

   • The decisive factor in their decision was the cost.
   • Her experience was the decisive factor for getting the job.
   • The weather will be the decisive factor for the outdoor event.