Accidental Definition

ăksĭ-dĕntl
adjective
Happening by chance; fortuitous.
Webster's New World
Belonging but not essential; attributive; incidental.
Webster's New World
Of an accidental.
Webster's New World
Being an animal, especially a bird, that has strayed beyond its normal range.
American Heritage
(music) Foreign to the key signature or a proper harmony.
Wiktionary
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noun
A nonessential quality or feature.
Webster's New World
A property, factor, or attribute that is not essential.
American Heritage
A sign, as a sharp, flat, or natural, placed before a note to show a change of pitch from that indicated by the key signature.
Webster's New World
The tone indicated by such a sign.
Webster's New World
An animal that has strayed beyond its normal range.
American Heritage
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Other Word Forms of Accidental

Noun

Singular:
accidental
Plural:
accidentals

Origin of Accidental

  • Compare French accidentel, earlier accidental.

    From Wiktionary

  • accident +‎ -al

    From Wiktionary

  • First attested in 1386.

    From Wiktionary

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