English
irreconciliation
From ir- + reconciliation.
Formed from in- + reconciliation
Proto-Indo-European *kelh₁- ‘to call out to’
Anglo-Norman reconciliaciun
Middle English reconciliacioun ‘act of reconciling’
English reconciliation
Today it means
noun Lack of reconciliation; disagreement
Language periods are conventional ranges, not dates for this word.
Etymograph / irreconciliation