unperceptive

Even though she had known him for years, she remained unperceptive about his growing anxiety.

用法提示：unperceptive 是形容词，作表语，表示‘不敏锐的’。

His unperceptive response showed that he had not understood the question.

用法提示：unperceptive 作定语修饰名词，表示‘迟钝的’。

I felt unperceptive when everyone laughed at the joke and I had no idea why.

用法提示：unperceptive 作表语，描述主语‘感觉迟钝’的状态。