ugly as a toad

(as) ugly as a toad

Extremely unattractive or visually displeasing. A: "Why would anyone want to date me? I'm as ugly as a toad!" B: "Hey, now, that's just not true! Plus, you're an incredibly smart, funny, and sweet person!" Everyone keeps hailing the building's design as some innovative and daring artistic statement, but I think it looks ugly as a toad.
See also: toad, ugly
Farlex Dictionary of Idioms.

*ugly as a toad

[of a living creature] very ugly. (*Also:as ~.) Maria may be a beautiful woman, but when she was a child she was as ugly as a toad. The shopkeeper was ugly as a toad, but he was kind and generous, and everyone loved him.
See also: toad, ugly
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs.
See also:
  • (as) ugly as a toad
  • toad
  • be (as) ugly as sin
  • (as) ugly as sin
  • as ugly as sin
  • ugly as sin
  • fugly
  • pug-ugly
  • plug-ugly
  • hard on the eyes