In-vin'çi-ble, a.

a. [Prefix in, not, and vincible; Fr. invincible, Sp. invincible, invincible, It. invincibile. Lat. invincibilis.] Incapable of being conquered or overcome; unconquerable; insuperable; as, an invincible army; an invincible obstacle, error, or habit.

Lead forth to battle there my sons Invincible. Milton.