Find Synonyms

watertight Synonyms

Another word for watertight

Choosing another word for watertight depends on context, so the 17 synonyms and similar words below are separated across 2 exact definitions and ranked by match strength.
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• adjective (Context 1)

So closely sealed or constructed as to prevent water from entering or escaping.

Usage Example

"The sensitive photography equipment was stored inside a waterproof container before the boat trip."

Strongest
waterproof
impermeable
Strong
impervious
leakproof
water-resistant
hermetic
sealed

• adjective (Context 2)

Having no flaws, loopholes, or weaknesses that could cause failure or doubt (especially of an argument, contract, or alibi).

Usage Example

"The defense attorney presented a airtight alibi that completely cleared the suspect of all charges."

Strongest
airtight
ironclad
foolproof
bulletproof
Strong
unassailable
irrefutable
incontestable
indisputable
flawless
impregnable

Opposites of watertight

The opposite of watertight shifts depending on context. Common opposites include:

leaky
flawed
permeable
porous
weak
shaky
dubious
questionable
See all opposites of watertight

• Nearby Words

watersports
waterspout
waterthrush
watertight
watertightness
waterway
waterwheel

Cite this Entry

Wordmom. (2026). Synonyms for Watertight. In Wordmom Thesaurus. Retrieved Nov 5, 2026, from https://wordmom.com/synonyms/watertight
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