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Impregnable
Synonyms for
impregnable
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bulletproof
dangerous
defendable
defensible
fast
faster
firm
impenetrable
impermeable
impervious
indestructible
indomitable
inflexible
insuperable
insurmountable
invincible
inviolable
invulnerable
protected
safe
secure
shielded
solid
strong
tenable
unassailable
unattackable
unbeatable
unconquerable
unstoppable
unyielding
watertight
Opposites of
impregnable
There are 32 synonyms for impregnable
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