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accidental

[ak-si-den-tl] /ˌæk sɪˈdɛn tl/
adjective
1.
happening by chance or accident; not planned; unexpected:
an accidental meeting.
2.
nonessential; incidental; subsidiary:
accidental benefits.
3.
Music. relating to or indicating sharps, flats, or naturals.
noun
4.
a nonessential or subsidiary circumstance, characteristic, or feature.
5.
Music. a sign placed before a note indicating a chromatic alteration of its pitch.
Origin of accidental
1350-1400
1350-1400; Middle English < Medieval Latin accidentālis. See accident, -al1
Related forms
accidentally, accidently, adverb
accidentalness, accidentality, noun
nonaccidental, adjective, noun
nonaccidentally, adverb
nonaccidentalness, noun
preaccidental, adjective
preaccidentally, adverb
pseudoaccidental, adjective
pseudoaccidentally, adverb
quasi-accidental, adjective
quasi-accidentally, adverb
unaccidental, adjective
unaccidentally, adverb
Synonyms
1. unintentional, unforeseen. Accidental, casual, fortuitous all describe something outside the usual course of events. Accidental implies occurring unexpectedly or by chance: an accidental blow. Casual describes a passing event of slight importance: a casual reference. Fortuitous is applied to events occurring without known cause, often of a fortunate or favorable nature: a fortuitous shower of meteors. It often also implies good luck or good fortune: a fortuitous choice leading to rapid advancement.
Antonyms
1. planned, contrived.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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British Dictionary definitions for accidently

accidental

/ˌæksɪˈdɛntəl/
adjective
1.
occurring by chance, unexpectedly, or unintentionally
2.
nonessential; incidental
3.
(music) denoting sharps, flats, or naturals that are not in the key signature of a piece
4.
(logic) (of a property) not essential; contingent
noun
5.
an incidental, nonessential, or supplementary circumstance, factor, or attribute
6.
(music) a symbol denoting a sharp, flat, or natural that is not a part of the key signature
Derived Forms
accidentally, adverb
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for accidently

accidental

adj.

late 14c., "non-essential," from Old French accidentel or directly from Medieval Latin accidentalis, from Latin accidentem (see accident). Meaning "outside the normal course of nature" is from early 15c.; that of "coming by chance" is from 1570s.

n.

late 14c., "non-essential quality," from accidental (adj.). The musical sense is from 1868.

Online Etymology Dictionary, © 2010 Douglas Harper
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