happening by chance or unexpectedly or unintentionally ;
"with an inadvertent gesture she swept the vase off the table"
"an accidental shooting"
May also refer to inadvertent snagging when sport fishing with a bait or lure, the fish being hooked on some body part outside the mouth. 可能也指的是不注意的绊住，当垂钓用鱼著迷于诱饵或饵的时候，在嘴巴之外的身体部份被钩住。
The length of any leg of a speed course should be long enough so that inadvertent timing errors do not introduce appreciable errors into calculated speed. 速度课程的任何腿的长度应该够长的，以便不注意的时间安排错误不引导可感知的错误进入有计划的速度。
The pregnancy was inadvertent and unwanted by Rebecca.