Find Synonyms

impregnable Synonyms

Another word for impregnable

Choosing another word for impregnable depends on context, so the 13 synonyms and similar words below are separated across 2 exact definitions and ranked by match strength.
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• adjective (Context 1)

So strongly built, fortified, or positioned as to be unable to be captured, broken into, or breached by force.

Usage Example

"Perched high atop sheer granite cliffs, the medieval citadel remained impenetrable for centuries."

Strongest
impenetrable
invulnerable
unassailable
Strong
inviolable
unconquerable
invincible
secure

• adjective (Context 2)

Unable to be defeated, overcome, or undermined by criticism, challenge, or competition.

Usage Example

"By the final quarter of the fiscal year, the tech company had established a seemingly unassailable lead in the market."

Strongest
unassailable
invincible
Strong
unbeatable
indomitable
unshakeable
bulletproof
ironclad
airtight

Opposites of impregnable

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

vulnerable
penetrable
defenseless
weak
assailable
tenuous
precarious
breachable
See all opposites of impregnable

• Nearby Words

imprecisely
imprecision
impregnability
impregnable
impregnably
impregnatable
impregnate

Cite this Entry

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