impregnable
3 antonyms for impregnable — opposites grouped by meaning.
Adj — Too strong or well-defended to be captured, broken into, or defeated.
Antonyms
How to use impregnable
The word patterns that sound natural to a native speaker.
Etymology
From Old French imprenable, "impossible to capture," from im- + prenable ("takable," from prendre, "to take"). The "g" was added later by analogy with words like reign and deign.
Full origin of impregnable →