airtight

• Beschreibt etwas, das so abgedichtet ist, dass keine Luft eindringen oder entweichen kann; im übertragenen Sinn auch für etwas, das nicht widerlegt oder angezweifelt werden kann.

Describes something that is sealed so that no air can enter or escape; also used figuratively to mean impossible to dispute or question.

1. Sealed against airB1formal

   Not allowing air or gas to pass in or out.

   luftdicht

   • The container is airtight to keep the food fresh.
   • Airtight seals are essential for vacuum packaging.
   • The laboratory uses airtight chambers for experiments.

   Synonymegas-tighthermeticimpermeableleakproofsealed

   Antonymeleakypermeableporousventilated

2. Flawless or unassailableB2informal

   Having no weak points; impossible to disprove or argue against.

   Unwiderlegbar

   • The lawyer presented an airtight case to the jury.
   • Her argument was so airtight that no one could challenge it.
   • He has an airtight alibi for the night of the crime.

   Synonymeimpregnableincontrovertibleindisputableinvulnerableirrefutablesoundunassailablewatertight

   Antonymeassailableflawedpenetrablequestionablerefutablevulnerable