heinous

the word "heinous" entered english in the 14th century from the old french "haineus," meaning "inspired by hate," which itself derived from "haine" (hate). the old french term traces back to the vulgar latin "odinosus," a derivative of the latin "odium," meaning "hatred." the semantic journey is direct: from the core concept of hatred, the meaning evolved to describe acts so abhorrent they inspire profound hatred and revulsion, solidifying into its modern sense of being utterly wicked or atrocious.

this word is a simplex loanword from french. its spelling and form are not productively built from separable english morphemes.