a.

1. 附带的；伴随的；非主要的[（+to）]
   an incidental remark

   附带的话

   a profit incidental to regular wages

   正常工资外的一份红利

2. 偶然发生的
   an incidental meeting of a former teacher on a bus

   在公共汽车上与过去一位老师的邂逅

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

   成长中的烦恼

n.

1. 附带事件；偶然事件[C]
2. 杂项；杂费[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.