Meaning

adjective displeasing to the senses

adjective inclined to anger or bad feelings with overtones of menace

adjective morally reprehensible

originInherited from Middle English ugly, uggely, uglike, borrowed from Old Norse uggligr (“fearful, dreadful, horrible in appearance”), from uggr (“fear, apprehension, dread”) (possibly related to agg (“strife, hate”)), equivalent to ug + -ly. Cognate with Scots ugly, uglie, Icelandic ugglegur. Meaning softened to "very unpleasant to look at" around the late 14th century, and sense of "morally…

Etymology from Wiktionary, CC BY-SA 3.0