from The American Heritage® Dictionary of the English Language, 4th Edition
- adj. Unpleasant or offensive to look at; unattractive. See Synonyms at ugly.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- adj. displeasing to the eye
from The Century Dictionary and Cyclopedia
- Disagreeable to the eye; ugly; deformed; repulsive.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- adj. unpleasant to look at
un- + sightly (Wiktionary)