! is a punctuation mark, called an exclamation mark, exclamation point, ecphoneme, or bang.
! or exclamation point may also refer to:
Mathematics and computers
- Factorial, a mathematical function
- Derangement, a related mathematical function
- Negation, in logic and some programming languages
- Uniqueness quantification, in mathematics and logic
!, a CONFIG.SYS directive in FreeDOS for unconditional execution of directives- A dereference operator in BCPL
Music
- ! (The Dismemberment Plan album), released in 1995
- ! (Donnie Vie album), released in 2016
- "!" (The Song Formerly Known As), a single on the 1997 album Unit by Regurgitator
- Exclamation Mark (album), a 2011 album by Jay Chou
- Exclamation Point, a 2010 LP by DA!
- ! (Trippie Redd album), released in 2019
- ! (Trippie Redd song), that album's title track
- ! (Cláudia Pascoal album), released in 2020
Other
- ǃ, the IPA symbol for postalveolar click in speech
- An indicator of a good chess move in punctuation
- ! (chess), a good move in chess annotation
See also
- !! (disambiguation)
- !!! (disambiguation)
- Interrobang, the nonstandard mix of a question mark and an exclamation mark
- ḷ, not the exclamation mark, but a lower-case letter Ḷ used in Asturian