Simple Definition of airtight
: tightly sealed so that no air can get in or out
: too strong or effective to fail or to be defeated
Full Definition of airtight
1 : impermeable to air or nearly so <an airtight seal>
2 a : having no noticeable weakness, flaw, or loophole <an airtight argument> b : permitting no opportunity for an opponent to score <an airtight defense>
Examples of airtight in a sentence
Store the food in an airtight container.
The defendant had an airtight alibi.
First Known Use of airtight
AIRTIGHT Defined for Kids
Definition of airtight for Students
: so tightly sealed that no air can get in or out <Store the cookies in an airtight container.>
Seen and Heard
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