perplexed

动词 perplex:

1. be a mystery or bewildering to
   同义词：perplex, vex, stick, get, puzzle, mystify, baffle, beat, pose, bewilder, flummox, stupefy, nonplus, gravel, amaze, dumbfound
2. make more complicated
   同义词：complicate, perplex

形容词 perplexed:

1. full or difficulty or confusion or bewilderment

1. We were perplexed by his failure to answer the letter.
   他何以不覆信，我们大惑不解。
2. The question perplexed me.
   那问题把我难住了。
3. Faced with that dilemma, he was perplexed.
   他面对进退两难的局面，不知如何是好。
4. When new math was introduced into schools, many parents were perplexed by it.
   当学校开设新的数学课时，许多家长对此感到迷惑不解。

per.plexed

adj.（形容词）
Filled with confusion or bewilderment; puzzled.
困惑的，费解的：充满困惑或昏乱的；令人费解的
Full of complications or difficulty; involved.
复杂的，杂乱的，难办的：充满抱怨或困难的；复杂的

来源：
Middle English
中古英语
from perplex [confused]
源自 perplex [混乱的]
from Old French perplexe
源自 古法语 perplexe
from Latin perplexus
源自 拉丁语 perplexus
per- [per-]
per- [前缀，表示.通过，完全.等意]
plexus [past participle of] plectere [to entwine] * see plek-
plexus [] plectere的过去分词 [缠住，盘绕，纠缠] *参见 plek-

【引伸】
perplex.edly