watertight

• Décrit quelque chose d'étanche, qui ne laisse pas passer l'eau ; s'emploie aussi au sens figuré pour qualifier un argument ou un plan irréprochable, impossible à contester.

Describes something that is sealed so that water cannot enter or escape; also used figuratively to describe an argument or plan that is flawless and cannot be disputed.

1. Impermeable to waterB1formal

   Constructed or sealed so that water cannot enter or escape.

   Étanche à l'eau

   • The submarine's hull is completely watertight.
   • Make sure the container is watertight before storing the liquid.
   • The new watch has a watertight seal up to 100 meters.

   Synonymesimpermeableleakproofsealedwaterproof

   Antonymesleakypermeableporous

2. Without flaws or loopholesB2formal

   Describes an argument, plan, or legal case that is perfectly logical and cannot be disproven or avoided.

   Sans faille

   • The prosecutor presented a watertight case against the defendant.
   • We need a watertight contract to avoid any future disputes.
   • His alibi was watertight, so the police had to release him.

   Synonymesairtightbulletprooffoolproofimpregnableironcladrigoroussoundunassailable

   Antonymesfaultyflawedlooserefutableshakyunsoundvulnerableweak