clanger
noun
[ ˈklaŋə ]
• an absurd or embarrassing blunder.
• "the minister had dropped a massive political clanger"
Similar:
mistake,
blunder,
gaffe,
error,
faux pas,
slip of the tongue/pen,
solecism,
misjudgement,
miscalculation,
indiscretion,
impropriety,
slip-up,
boo-boo,
boner,
howler,
boob,
bloomer,
floater,
goof,
blooper,
bloop,
lapsus linguae,
lapsus calami,