Occurring unexpectedly, unintentionally, or by chance.
Music Of or relating to an accidental.
Being an animal, especially a bird, that has strayed beyond its normal range.
A property, factor, or attribute that is not essential.
Music Any of various signs that indicate the alteration of a note by one or two semitones or the cancellation of a previous sign. A note that has been marked with such a sign.
An animal that has strayed beyond its normal range.