I. i-ˌre-kən-ˈsī-lə-bəl, -ˈre-kən-ˌ, ˌi(r)- adjective
Date: 1587
: impossible to reconcile
irreconcilable differences
• ir·rec·on·cil·abil·i·ty -ˌre-kən-ˌsī-lə-ˈbi-lə-tē noun
• ir·rec·on·cil·able·ness -ˌre-kən-ˈsī-lə-bəl-nəs, -ˈre-kən-ˌ noun
• ir·rec·on·cil·ably -blē adverb
II. noun
Date: 1748
: one that is irreconcilable ; especially : a member of a group (as a political party) opposing compromise or collaboration