Antonyms of adj shellproof

1 sense of shellproof

Sense 1
bombproof, shellproof -- (able to resist the explosive force of bombs and shells; "bombproof shelter")

INDIRECT (VIA invulnerable) -> vulnerable -- (susceptible to attack; "a vulnerable bridge")

Similarity of adj shellproof

1 sense of shellproof

Sense 1
bombproof, shellproof -- (able to resist the explosive force of bombs and shells; "bombproof shelter")
       => invulnerable (vs. vulnerable) -- (immune to attack; impregnable; "gunners raked the beach from invulnerable positions on the cliffs")