airtight

== English == === Alternative forms === air-tight air tight === Etymology === From air +‎ tight. === Pronunciation === === Adjective === airtight (comparative more airtight, superlative most airtight) Impermeable to air or other gases. (figuratively) Having no weak points or flaws. (figuratively, of a person) Highly reserved in some matter, particularly tight-lipped or tight-fisted. 1908, The Plumbers Trade Journal, Plumbers’ Trade Journal Publishing Company, volume 44: when Roger asked for $100 to take the preliminary steps to establish his claim, Mike yelled like a Hebrew auctioneer, for he was air-tight and squeezed a dollar until the woman on it yelled. 1915 April, Annals of Iowa, Historical Department of Iowa, series 3, volume 12, page 599: He was ‘air-tight,’ close-mouthed, and had but few confidants or intimate friends, but numerous acquaintances. (figuratively, pornography, of a person) Triply penetrated simultaneously in the vagina, anus and mouth. ==== Synonyms ==== (impermeable to air): hermetic ==== Antonyms ==== breathable transpirable ==== Derived terms ==== ==== Related terms ==== ==== Translations ====