fugly as sin

rude slang Extremely visually displeasing or unattractive. ("Fugly" is a portmanteau of "fucking" and "ugly.") This old car is all beat up and fugly as sin, but it's still going strong after all these years. Oh, that dress looks fugly as sin. Fabric like that should only be used to make drapes for funeral homes. We can't buy this house! Not only is it fugly as sin, it also looks to be about five minutes away from collapsing!