Impregnable

"Impregnable" in ca

impenetrable

(of a fortress or other fortified place: able to withstand all attacks — see also impenetrable, inconquerable, unvanquishable)

impenetrable

(too strong to be defeated or overcome — see also invincible)

impregnable

(of a fortress or other fortified place: able to withstand all attacks — see also impenetrable, inconquerable, unvanquishable)

inexpugnable

(of a fortress or other fortified place: able to withstand all attacks — see also impenetrable, inconquerable, unvanquishable)

inexpugnable

(too strong to be defeated or overcome — see also invincible)

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.