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Definition of airtightness
airtightness
/ˈɛərˌtaɪtnəs/
air · tight · ness
Adverb:airtightly
•Adjective:airtight
airtightness Lexical Profile
CEFR
C1
Grade
10
Tier
2
Usage
Rare
Syllables
3
airtightness Game Scores & Validity
Scrabble US
Scrabble UK
WWF
Wordle Guess
• noun
1
The state or quality of being completely sealed so that no air or gas can enter or escape.
Example
"The engineers tested the airtightness of the newly constructed building to maximize its energy efficiency."
2
The quality of having no weak points, loopholes, or flaws (such as an argument, alibi, or legal contract).
Example
"The defense attorney was confident in the airtightness of the suspect's alibi."
Synonyms
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View all antonyms for airtightnessCite this Entry
Wordmom. (2026). Definition of Airtightness. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/airtightness