Synset

immune to attack; impregnable
<adj.all> freq. cnt.: 1 freq. cnt.: 1

sample sentences

"gunners raked the beach from invulnerable positions on the cliffs"

lexical pointers

antonym

derivationally related form

invulnerability

semantic pointers

also see

protected safe secure unconquerable

similar to

airtight, air-tight bombproof, shellproof defensible, defendable entrenched impregnable, inviolable, secure, strong, unassailable, unattackable tight sheltered untouchable