unaware
词根词缀：
aware adj. 意识到的
a 表加强 + ware 注视 → 一直注视 → 意识到的
awareness n. 知道
aware的名词
beware v. 谨防
be 使… + ware 注视 → 睁大眼睛注视 → 谨防
unaware adj. 不知道的
un 不 + aware 意识到的 → 不知道的
wary adj. 警惕的
war〔e〕注视 + y 多…的，有…的 → 时刻注视的 → 警惕的
数据来源：新东方英语词汇速记大全
相关例句：
This can produce unexpected results if you are unaware of the fact that the expression has side effects.
如果您不知道该表达式有副作用，则这会产生意外的结果。
Many people are unaware of just how much food and drink they consume
许多人并不知道他们究竟消耗掉了多少食品和饮料。
I suggested it because the father was unaware of the effect that his anger was having on his children.
我之所以让他看这部影片是因为影片中的父亲没有意识到他发怒对他的孩子们所产生的影响。
Those afflicted with the disease are often unaware of it in the early stages.
这种病初起时，患者每不自觉。
And your boss may simply be unaware of his or her behavior and its impact on you.
上司对你发火了，但他可能没有意识到这伤害了你的感受。
He also said he was unaware of any financial settlement being paid.
他还说他并没有意识到任何财务结算已经被支付。