- (a.) Happening by chance or unexpectedly; taking place not according to the usual course of things; casual; fortuitous; as, an accidental visit.
- (a.) Nonessential; not necessary belonging; incidental; as, are accidental to a play.
- (n.) A property which is not essential; a nonessential; anything happening accidentally.
- (n.) Those fortuitous effects produced by luminous rays falling on certain objects so that some parts stand forth in abnormal brightness and other parts are cast into a deep shadow.
- (n.) A sharp, flat or natural, occurring not at the commencement of a piece of music as the signature, but before a particular note.
Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). accidental. Retrieved September 21, 2026, from http://smartdefine.org/accidental/definitions/1970152 |
| Chicago | Webster's. 2011. "accidental" http://smartdefine.org/accidental/definitions/1970152 (accessed September 21, 2026). |
| Harvard | Webster's 2011, accidental, Smart Define, viewed 21 September, 2026, <http://smartdefine.org/accidental/definitions/1970152>. |
| MLA | Webster's. "accidental" 27 May 2011. Web. 21 September 2026. <http://smartdefine.org/accidental/definitions/1970152> |