be (as) ugly as sin

To be extremely visually displeasing or unattractive. I wouldn't buy that painting, it's ugly as sin. I heard the date didn't go well and that the guy was as ugly as sin.

Common Names:

Name	Pronounced	Usage
Uranus	yuw-RAY-nəs (English), YUWR-ən-əs (English)	Greek Mythology (Latinized)
Esta	ES-tə	English
Herb	HURB	English
Klaudio	-	Croatian
JosÉE	zho-ZE	French
&Thorn;ÓRgÍSl	-	Ancient Scandinavian