The definition of invincible is someone or something that cannot be harmed or that is too powerful to be destroyed.
Not superable; that cannot be overcome or passed over; insurmountable
Impossible to defeat or surpass:
Capable of happening, existing, or being true without contradicting proven facts, laws, or circumstances:
Incapable of being negotiated or overcome
Find another word for insurmountable. In this page you can discover 17 synonyms, antonyms, idiomatic expressions, and related words for insurmountable, like: impassable, hopeless, unconquerable, invincible, impossible, insuperable, unbeatable, unsurmountable, overwhelming, surmountable and possible.