as ugly as sin

(as) ugly as sin

Extremely visually displeasing or unattractive. This old car is all beat up and ugly as sin, but it's still going strong after all these years. I'm sure I looked as ugly as sin by that point, with my makeup smeared all over the place and my hair a total mess. Well, this wallpaper obviously has to go—it's ugly as sin!

See also: sin, ugly

Farlex Dictionary of Idioms. © 2024 Farlex, Inc, all rights reserved.

(as) ugly as sin

mod. very ugly. This car’s as ugly as sin, but it’s cheap and dependable.

See also: sin, ugly

McGraw-Hill's Dictionary of American Slang and Colloquial Expressions Copyright © 2006 by The McGraw-Hill Companies, Inc. All rights reserved.