unprepared

详细解释:a. 无准备的, 即席的, 不期而遇的

词型变化：

名词:unpreparedness副词:unpreparedly

英语解释：

形容词 unprepared:

without preparation; not prepared for- R.E.Danielson

例句：

I was unprepared for his answer.我对他的回答未做好心理准备。