IPA: /ˌʌnˈrɛkənˌsaɪld/
KK: /ʌnˈrɛkənˌsaɪld/
Not resolved or made compatible; remaining in a state of disagreement or conflict.
The two sides remained unreconciled despite numerous attempts to negotiate a solution.
Unreconciled → It is formed from "un-" (meaning not) and "reconciled" (from Latin "reconciliare", meaning to bring together again). The word "unreconciled" means not brought together again or not resolved.
Think of 'not' ('un-') being added to 'brought together again' ('reconciled') — that's why unreconciled means something that hasn't been resolved.