What is the etymology of ominous?

The Word "ominous" originates from the Latin term "ominōsus," which means "foreboding" or "portending evil." This Latin term is derived from "omen," referring to a sign or warning of future events, particularly those that are unfavorable. The Word entered the English language in the early 19th century, retaining its connotation of suggesting something sinister or threatening.