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 (n.)
late 14c., "non-essential quality," from accidental (adj.). The musical sense is from 1868.
权威例句
1. The jury returned a verdict of accidental death.
陪审团作出意外死亡的正式裁决。
2. Accidental inhalation of the powder can be harmful.
意外的粉尘吸入可能有害。
3. a verdict of accidental death
意外死亡的裁决
4. This accidental killing sparked major riots in the cities.