“+ adjective
1. : not of the Christian faith
love for the unchristian neighbor — John Dillenberger & Claude Welch
2.
a. : contrary to Christianity or the Christian spirit or character : not becoming to or like a Christian
ashamed to have to recognize how fundamentally unchristian his actual assumptions, motives, and attitudes are — F.R.Leavis
b. : barbarous , uncivilized
sitting up to unchristian hours — Arnold Bennett