Antonyms of adj inexpugnable

1 sense of inexpugnable

Sense 1
impregnable, inexpugnable -- (incapable of being overcome, challenged or refuted; "an impregnable argument"; "impregnable self-confidence")

INDIRECT (VIA unconquerable) -> conquerable -- (subject to being conquered or overcome; "knew her fears were ultimately conquerable")

Similarity of adj inexpugnable

1 sense of inexpugnable

Sense 1
impregnable, inexpugnable -- (incapable of being overcome, challenged or refuted; "an impregnable argument"; "impregnable self-confidence")
       => unconquerable (vs. conquerable) -- (not capable of being conquered or vanquished or overcome; "a tribute to his courage...and his unconquerable will"- R.E.Danielson; "faced unconquerable difficulties")