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Definition of watertight
watertight
/ˈwɔːtərˌtaɪt/
wa · ter · tight
watertight Lexical Profile
CEFR
B2
Grade
7
Tier
2
Usage
Top 10k
Syllables
3
watertight Game Scores & Validity
Scrabble US
Scrabble UK
WWF
Wordle Guess
• adjective
1
So closely sealed or constructed as to prevent water from entering or escaping.
Example
"The sensitive photography equipment was stored inside a watertight container before the boat trip."
2
Having no flaws, loopholes, or weaknesses that could cause failure or doubt (especially of an argument, contract, or alibi).
Example
"The defense attorney presented a watertight alibi that completely cleared the suspect of all charges."
Synonyms
View all synonyms for watertight Antonyms
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Cite this Entry
Wordmom. (2026). Definition of Watertight. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/watertight