airtight
Translation
airtight, hermetic, flawless
Examples
Keep the coffee in an airtight container.
Keep the coffee in an airtight container.
The lawyer presented an airtight alibi.
The lawyer presented an airtight alibi.
Grammar Patterns
((adjective)) not allowing air to pass through Keep the coffee in an airtight container.
((adjective)) having no weaknesses The lawyer presented an airtight alibi.
Similar Words
Synonyms: sealed, hermetic (literal); flawless, irrefutable (figurative)
Etymology
From 'air' + 'tight'. So tight that air cannot get in or out.
Memory Tips
Think of a container that is so 'tight' it keeps the 'air' out. This can also be used for arguments that have no weaknesses.