adjective Date: 1760 impermeable to air or nearly so , 2. having no noticeable weakness, flaw, or loophole , permitting no opportunity for an opponent to score , ~ness noun
AIRTIGHT
Meaning of AIRTIGHT in English
Merriam Webster. Explanatory English dictionary Merriam Webster. Толковый словарь английского языка Мерриам-Уэбстер. 2012