① bewilder的语气较重，表示使人陷入一种惊奇、茫然、局促不安的境地。
The way he changes his mind three or four times a day is utterly bewildering. 他一天之内就要改变三四次主意，真是叫人摸不着头脑。
② confuse（put into disorder，mix up in the mind）指因混淆而产生迷乱，把事情弄错，语气最轻微，词义最广泛。
He is given to making long and confused speeches. 他一说话就是一大篇，语无伦次。
Those long personal names sometimes have me confused. 那些长的人名有时把我搞糊涂了。
③ puzzle（cause it difficult to explain or understand）着重使人难以理解、回答、解决，检验人的机智和耐心。
The patient's illness puzzled the doctor；he couldn't find the cause. 那病人的病把医生难住了，他找不出原因。
The children are puzzled how the world came into being. 孩子们对世界是怎样形成的感到迷惑不解。
④ perplex指对问题难于理解，有顾虑，更强调不知如何抉择或如何对付，语气比puzzle强。
I am perplexed at the problem. 这个问题我不理解。
The problem was hard enough to perplex even the teacher. 这问题很难，把老师都难住了。
⑤ baffle指某事物或现象使人感到糊涂、惊奇或不能理解。
The magician baffled the audience with his trick. 这位魔术师的戏法令观众迷惑、惊奇。