Definition of unovercomable in US English:

unovercomable

adjective

  • That cannot be overcome; insurmountable.

Origin

Late 15th century; earliest use found in Reginald Pecock (c1392–?1459), bishop of Chichester and religious author. From un- + overcomable.

Pronunciation

unovercomable

/(ˌ)ʌnəʊvəˈkʌməbl/