In*vin"ci*ble (?), a. [L. invincibilis: cf. F. invincible. See In- not, and Vincible.]
Incapable of being conquered, overcome, or subdued; unconquerable; insuperable; as, an invincible army, or obstacle.
Lead forth to battle these my sons
Invincible.
Milton.
-- In*vin"ci*ble*ness, n. -- In*vin"ci*bly, adv.
© Webster 1913.