Find Synonyms

airtight Synonyms

Another word for airtight

Choosing another word for airtight depends on context, so the 15 synonyms and similar words below are separated across 2 exact definitions and ranked by match strength.
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• adjective (Context 1)

Not allowing air or gas to enter or escape; tightly sealed.

Usage Example

"Store the roasted coffee beans in an hermetic container to preserve their freshness."

Strongest
hermetic
sealed
Strong
impermeable
impenetrable
impervious
tight

• adjective (Context 2)

Having no weaknesses, flaws, or loopholes that could be challenged or exploited (especially of an alibi, argument, or contract).

Usage Example

"The defense attorney presented an ironclad alibi supported by security camera footage and multiple witnesses."

Strongest
ironclad
watertight
bulletproof
Strong
foolproof
unassailable
irrefutable
incontestable
rock-solid
indisputable

Opposites of airtight

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

flawed
leaky
weak
unsealed
permeable
flimsy
porous
shaky
See all opposites of airtight

• Nearby Words

airstream
airstrike
airstrip
airtight
airtightness
airtime
airwave

Cite this Entry

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