- accidental (adj.)
[accidental 词源字典]
- 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.[accidental etymology, accidental origin, 英语词源]
- accidental (n.)
- late 14c., "non-essential quality," from accidental (adj.). The musical sense is from 1868.