The Collaborative International Dictionary of English v.0.48:
Ugly \Ug"ly\, a. [Compar. Uglier; superl. Ugliest.] [Icel.
uggligr fearful, dreadful; uggr fear (akin to ugga to fear) +
-ligr (akin to E. -ly, like). ??. Cf. Awe.]
1. Offensive to the sight; contrary to beauty; being of
disagreeable or loathsome aspect; unsightly; repulsive;
The ugly view of his deformed crimes. --Spenser.
Like the toad, ugly and venomous. --Shak.
O, I have passed a miserable night,
So full of ugly sights, of ghastly dreams. --Shak.
2. Ill-natured; crossgrained; quarrelsome; as, an ugly
temper; to feel ugly. [Colloq. U. S.]
3. Unpleasant; disagreeable; likely to cause trouble or loss;
as, an ugly rumor; an ugly customer. [Colloq.]