From Wikipedia, the free encyclopedia

‼ (double exclamation mark) may refer to:

• A brilliant move in chess notation
• The double factorial operator in mathematics
• A "convert to Boolean" pseudo-operator in some computer languages
  • This is through a computer type of double negative, where its Boolean value is negated, then negated again, converting to the value to either true or false.
• An exclamation of joy, although it is incorrect grammar.

Double exclamation mark is present in Unicode as U+203C.

See also

• !!!
• ! (disambiguation)

This disambiguation page lists articles associated with the same title. If an internal link led you here, you may wish to change the link to point directly to the intended article.

Definition from Wiktionary, a free dictionary

Translingual

Symbol

!!

1. (chess) A very good move
2. (mathematics) double factorial
3. dramatization of the ! punctuation

Translations

Chess move

• Russian: !!, прекрасный ход, блестящий ход

See also

• !?
• ?!
• !
• ?
• ??
• ‼ (ligature)