imperceptive

He was so imperceptive that he didn't notice his friend's sadness.

用法提示：imperceptive作表语，表示缺乏感知能力，后接that从句说明迟钝的程度。

Her imperceptive comments showed she had no idea of the situation.

用法提示：imperceptive修饰comments，作定语，形容评论缺乏洞察力。

An imperceptive listener might miss the subtle irony in his speech.

用法提示：imperceptive修饰listener，作定语，表示听众缺乏感知能力。