level best

• Expression idiomatique signifiant faire de son mieux ou déployer le maximum d'efforts pour atteindre quelque chose.

An idiomatic expression meaning to do everything possible or to make the utmost effort to achieve something.

1. Utmost effortB2informal

   To do everything possible; to try as hard as one can.

   de son mieux

   • She did her level best to finish the project on time.
   • He tried his level best to win the race.
   • They did their level best to make the party a success.