accidental

Pertaining to accident and not essence; thus, inessential; incidental; secondary.

Pertaining to accident and not essence; thus, inessential; incidental; secondary.

Adjusted by one or two semitones, in temporary departure from the key signature.

Occurring sometimes, by chance; occasional.

Happening by chance, or unexpectedly; taking place not according to the usual course of things; by accident, unintentional.

The discovery was purely accidental.

He was killed by an accidental gunshot.

A property which is not essential; a nonessential; anything happening accidentally.

He conceived it just that accidentals ... should sink with the substance of the accusation.

A sharp, flat, or natural, occurring not at the commencement of a piece of music as the signature, but before a particular note.

Part of a text that has a mainly structural purpose, such as spelling, punctuation, or capitalization.