unbeknownst

形容词

1. 1

   不为…所知的、未被察觉的、在不知情的情况下常与 to 连用

   Unbeknownst to her parents, she had already signed the lease.

   她父母毫不知情，她早就签下了租约。

2. 2

   暗中进行的、偷偷的

   The changes were made unbeknownst, and nobody noticed for months.

   这些改动是暗中进行的，好几个月都没人发现。