airtight
Translation
airtight, sealed, impermeable
Examples
Keep the cookies in an airtight container.
Keep the cookies in an airtight container.
The lawyer presented an airtight alibi.
The lawyer presented an airtight alibi.
Grammar Patterns
((an airtight sth.)) not allowing air to pass through Keep the food in an airtight container.
((an airtight sth.)) having no weaknesses The team has an airtight defense.
Similar Words
Synonyms: sealed, impermeable; (figurative) foolproof, unassailable
Etymology
From 'air' and 'tight', literally meaning so tight that air cannot get through.
Memory Tips
Think of a container that is so 'tight' that no 'air' can pass. This concept extends to arguments or plans that have no weaknesses.