!!

!! ‼ ‼ (a double exclamation mark, Unicode character U+203C) may refer to: !! (chess), a symbol in chess annotation for outstanding or particularly strong moves Double factorial, an operator in mathematics Retroflex click, a family of click consonants found only in Juu and Namibian languages, and in the Damin ritual jargon Double-negation translation, !!p = p See also ! (disambiguation) !!! (disambiguation) math