1) Big goof 2) Bloomer 3) Blooper 4) Blunder 5) Boner 6) Boo-boo 7) Botch 8) Bungle 9) Faux pas 10) Flub 11) Foul-up 12) Fuckup 13) Quasimodo, at times 14) Stupid mistake 1) Chime 2) Error 3) Mistake 
Clanger is a colloquial term for `mistake`. It may also refer to: ...[Australian rules football] A clanger in Australian rules football is a term coined by Champion Data founder Ted Hopkins which refers to a turnover or a mistake made by a player. Its vague description in statistical tables is `errors including frees against`. Examples of clangers include, ...
Clanger is British slang for a glaring mistake.
[n] - (British) a conspicuous mistake whose effects seem to reverberate
noun a conspicuous mistake whose effects seem to reverberate; `he dropped a clanger`
a person or thing that clangs. · · a blunder; faux pas. · drop a clanger,to blunder.