I. (ˈ)in|vin(t)səbəl, ənˈv- adjective
Etymology: Middle English, from Middle French, from Late Latin invincibilis, from Latin in- in- (I) + vincibilis conquerable — more at vincible
1.
a. : incapable of being vanquished or subjugated : impervious to attack or conquest : unbeatable
invincible army
has been invincible in eight-oared Olympic rowing — Collier's Year Book
b. : impossible to overcome or subdue : absolute , unswerving
the invincible obscurity of his origins — Joseph Conrad
a resolute, yet not invincible , skepticism — A.G.N.Flew
invincible respect for authority
man's invincible conviction that a sublime soul cannot be imprisoned — W.L.Sullivan
2. : beyond an individual's control and so not involving moral responsibility : unavoidable — used especially of lack of knowledge about theological concepts
invincible ignorance
• in·vin·ci·ble·ness -nə̇s noun -es
• in·vin·ci·bly -blē, -bli adverb
II. noun
( -s )
: one that is invincible