adj
airtight
Airtight (adj) means Sealed so tightly that no air or gas can pass in or out. Example: “Store the coffee in an airtight container to keep it fresh.”
adj
1
Sealed so tightly that no air or gas can pass in or out.
"Store the coffee in an airtight container to keep it fresh."
2
So carefully reasoned or well-supported that it has no weak points; impossible to refute.
"The prosecutor built an airtight case against the defendant."
"His alibi was airtight — three witnesses confirmed his location."
How to use airtight
Learner’s notesIn plain EnglishEither sealed so no air can get through, or (for an argument or plan) so solid that no one can find a flaw in it.
Common pairings
an airtight seal
an airtight alibi
an airtight argument
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Word forms
- Comparative
- more airtight
- Superlative
- most airtight
Fill the gap
Can you complete this real example?
Store the coffee in an _____ container to keep it fresh.
Etymology
From air + tight, first used literally of seals and containers, later extended figuratively to arguments and plans with no flaws.
Antonyms
breathable
transpirable
Related words
Frequently asked questions
What does “airtight” mean?
The word “airtight” means sealed so tightly that no air or gas can pass in or out. In plain terms, either sealed so no air can get through, or (for an argument or plan) so solid that no one can find a flaw in it.
How do you use “airtight” in a sentence?
Here is “airtight” used in a sentence: “Store the coffee in an airtight container to keep it fresh.”
What is the opposite of “airtight”?
The opposite of “airtight” — its antonyms — are breathable and transpirable.
What part of speech is “airtight”?
“Airtight” is an adjective.
How many meanings does “airtight” have?
“Airtight” has 2 distinct senses listed in this dictionary. The most common is: sealed so tightly that no air or gas can pass in or out.
