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airtight

adjective

/ˈɛərˌtaɪt/

Meaning

Completely sealed so that no air can get in or out.

Store the cookies in an airtight container to keep them fresh.

airtight alibi

sealed, closed, secure, impenetrable

leaky, open, permeable

airtight container, airtight seal, airtight argument

having a dashing, jaunty, or slightly disreputable quality or appearance

based on personal feelings, tastes, or opinions rather than facts

Not able to be turned aside or diverted.

Easily deceived or tricked.

Formal and dignified; characterized by deep sincerity.

Having superior weight, force, influence, or importance.