Part of speech:
Not superable; that cannot be overcome or passed over; insurmountable
Impossible to defeat or surpass:
The definition of invincible is someone or something that cannot be harmed or that is too powerful to be destroyed.
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 15 synonyms, antonyms, idiomatic expressions, and related words for insurmountable, like: insuperable, unconquerable, unbeatable, impossible, hopeless, impassable, invincible, overwhelming, surmountable, possible and defeatable.