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
Narseh	-	Ancient Persian
Lenox	LEN-əks	Scottish, English (Rare)
Jaana	YAH:-nah	Finnish
Djuro	-	Serbian
Orhan	-	Turkish
ÁGoston	-	Hungarian