Impossible to damage, injure, or wound.(adjective)
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Use "invulnerable" in a sentence
"The more invulnerable the Empire is, the more invulnerable is Canada."
"The mystic is, in short, invulnerable, and must be left, whether we relish it or not, in undisturbed enjoyment of his creed."
"The riveting actor, best known as the invulnerable RoboCop, has brilliantly hit the skids as Stan Liddy, a corrupt Miami PD officer who gets busted by Internal Affairs."