Meaning

adjective deliberately violating accepted principles of right and wrong

adjective not adhering to ethical or moral principles

originEtymology tree Proto-Indo-European *né Proto-Indo-European *n̥- Proto-Italic *n̥- Latin im- English im- Proto-Indo-European *meh₁-der. Proto-Italic *mōs Latin mōs Proto-Indo-European *h₂el-der.? Proto-Italic *-ālis Latin -ālis Latin mōrālis Old French moralbor. Middle English moral English moral English immoral From im- + moral.

Etymology from Wiktionary, CC BY-SA 3.0