 impregnable |
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| 1. | [ adjective ] able to withstand attack | |
| Synonyms: | secure strong unassailable unattackable inviolable | |
| Examples: | "an impregnable fortress" "fortifications that made the frontier inviolable" |
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| Related terms: | invulnerable | |
| 2. | [ adjective ] impossible to take by storm | |
| Synonyms: | inexpugnable | |
| Related terms: | unconquerable | |
| Similar spelling: |
impregnably impregnate impregnated impressionable improvable improbable impregnability impressible impregnation imprecate impureness improbably improbableness impressed imprecise |
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