Definition of unreconciliable in US English:

unreconciliable

adjective

  • Irreconcilable.

Origin

Late 16th century. Alteration of unreconcilable after post-classical Latin irreconciliabilis irreconciliable.

Pronunciation

unreconciliable

/(ˌ)ʌnˌrɛk(ə)nˈsɪlɪəbl/