a.

1. 附帶的；伴隨的；非主要的[（+to）]
   an incidental remark

   附帶的話

   a profit incidental to regular wages

   正常薪資外的一份紅利

2. 偶然發生的
   an incidental meeting of a former teacher on a bus

   在公車上與過去一位老師的邂逅

3. 易發生的；免不了的[（+to）]
   problems incidental to growing up

   成長中的煩惱

n.

1. 附帶事件；偶然事件[C]
2. 雜項；雜費[P]

adj.

1. occurring as a minor accompaniment.
   ▸occurring by chance in connection with something else.
2. (incidental to) liable to happen as a consequence of.

n.