Synonyms for (adjective) invincible

Synonyms: unbeatable, invincible, unvanquishable

Definition: incapable of being overcome or subdued

Usage: an invincible army; her invincible spirit

Similar words: unconquerable

Definition: not capable of being conquered or vanquished or overcome

Usage: a tribute to his courage...and his unconquerable will- R.E.Danielson; faced unconquerable difficulties