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3. ugly as sin

ugly as sin

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*ugly as sin

Cliché extremely ugly. (*Also: as ~.) Why would anyone want to buy that dress? It's as ugly as sin! Harold is ugly as sin, but his personality is very charming.

See also: sin, ugly

ugly as sin

Physically or morally hideous, as in I can't think why she likes that dog; it's ugly as sin. This simile, first recorded in 1801, replaced the earlier ugly as the devil.

See also: sin, ugly

ugly as sin

verb

See as ugly as sin

See also: sin, ugly