air-tight meaning

UK US

air-tight (adjective): having no weak points.

air-tight has 2 meanings in this dictionary.

air-tight as an adjective

  1. having no weak points
    • an airtight defense
    • an airtight argument

    Synonyms: airtight

    Similar: invulnerable

  2. not allowing air or gas to pass in or out

    Synonyms: airtight, gas-tight

    Similar: tight

More about air-tight on Wikipedia.