don't underestimate
Ne sous-estimez pas sa détermination.
Don't underestimate their determination.
Ne sous-estimez pas votre adversaire.
Don't underestimate your opponent.
Do not underestimate the enemy.
Oui, mais ne sous-estimez pas l'impact psychologique d'une explosion atomique.
Yes, but don't underestimate the psychological impact of an atomic explosion.
— Oppenheimer (2023)
Don’t underestimate my strength.