scared ⇒ 惊慌失措 jīnghuāng shī cuò → be scared out of one's wits
慌乱
flustered
慌张
nervous
慌忙
hurried
心慌意乱
be nervous and flustered ⇒ 遇到这种麻烦事,他心慌意乱,不知所措。 Yùdào zhè zhǒng máfanshì, tā xīn huāng yì luàn, bù zhī suǒ cuò. → When he comes up against this kind of problem, he gets nervous and flustered and doesn't know what to do.