Dictionary
in•vul•ner•a•ble
Pronunciation: (in-vul'nur-u-bul), [key]—
adj.
1. incapable of being wounded, hurt, or damaged.
2. proof against or immune to attack:
A strong navy made Great Britain invulnerable.
3. not open to denial or disproof:
an invulnerable argument. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.