Main Entry:

air·tight

Pronunciation:

\ˈer-ˌtīt\

Function:

adjective

Date:

1760

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>

— air·tight·ness noun