adj Displeasing to the eye; aesthetically unpleasing.
adj Displeasing to the ear or some other sense.
adj Offensive to one's sensibilities or morality.
adj (Southern US) Ill-natured; crossgrained; quarrelsome.
adj Unpleasant; disagreeable; likely to cause trouble or loss.
n (slang, uncountable) Ugliness.
n (slang) An ugly person or thing.
n (logistics, informal) Any product whose size and shape prevents it from fitting neatly on a pallet.
n (UK, informal, dated) A shade for the face, projecting from a bonnet.
v (transitive, nonstandard) To make ugly (sometimes with up).