undisclosed
adj. 未泄露的；身份不明的；保持秘密的
例句
He was paid an undisclosed sum.
他得到了一笔数目不详的钱。
《牛津词典》
The company has been sold for an undisclosed amount.
该公司已经以一笔未公开的价钱被出售。
《柯林斯英汉双解大词典》
Terms of the deal were undisclosed.
交易条款不详。
