ugsome /ˈʌɡsəm/ adjective1 •(dialect, UK) Ugly; horrible; disgusting; offensive, loathsome, repellent.This is hell, this is the image of death, this is hell, such an euil fauored face, such an ugsom countenance, suche an horrible visage our sauiour Christ saw of death and hell in the gardein. — 1553 formsmore ugsome · most ugsome