Same word as irreconcilable:
clashing, diametrically opposed, discordant, discrepant, dissonant, hard-line, implacable, incompatible, incongruous, inconsistent, inexorable, inflexible, inharmonious, intransigent, opposed, reluctant, unappeasable, uncompromising, unfriendly
clashing, diametrically opposed, discordant, discrepant, dissonant, hard-line, implacable, incompatible, incongruous, inconsistent, inexorable, inflexible, inharmonious, intransigent, opposed, reluctant, unappeasable, uncompromising, unfriendly