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impregnable

adjective

/ɪmˈprɛɡnəbl̩/

Meaning

Unable to be captured, broken into, or defeated.

The fortress was considered impregnable by the enemy.

invincible, unassailable, indestructible, secure, invulnerable

vulnerable, weak, defenseless

impregnable fortress, impregnable defense, impregnable position, impregnable wall

not deep; superficial; lacking depth of knowledge

Relating to the earliest stage of development; essential or fundamental.

Extremely overweight; having an excessive amount of body fat.

recklessly extravagant or wasteful in resources

relating to storytelling; descriptive; telling a story; recounting events

planned in advance; done deliberately