to confuse somebody so that they do not know what to say or do使困惑;使糊涂
be flummoxed (by something)I was flummoxed by her question.她的问题把我弄糊涂了。
Word Originmid 19th cent.: probably of dialect origin; flummock ‘to make untidy, confuse’ is recorded in western counties and the north Midlands of England.