Impregnable

"Impregnable" in cmn

固若金湯 /固若金汤

gùruòjīntāng

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

堅不可摧 /坚不可摧

jiānbùkěcuī

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

險固 /险固

xiǎngù

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

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