1.Definition: displeasing to the senses

"An ugly face", "Ugly furniture"

2.Definition: inclined to anger or bad feelings with overtones of menace

"An ugly frame of mind"

Related Adjective(s):surly

3.Definition: morally reprehensible

"Ugly crimes"

Related Adjective(s):despicable, slimy, unworthy, vile, worthless, wretched

4.Definition: provoking horror

"An ugly wound"

Related Adjective(s):atrocious, frightful, horrible, horrifying