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Impregnable has 42 synonyms. The top synonyms for impregnable are inextinguishable, unsurmountable, indestructible, undestroyable, unconquerable, nonperishable, incorruptible, incontestable and 34 more. Another word for impregnable is inextinguishable. Browse the full list below.
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| Random | DefinitionA common synonym for impregnable is inextinguishable. Other synonyms include unsurmountable, indestructible, undestroyable, unconquerable.
Impregnable has 42 synonyms listed on Thesaurasize.
(adj): (Of a fortress, wall, etc.) Too strong to be penetrated
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