confound

verbs

be confusing or perplexing to; cause to be unable to think clearly

"These questions confuse even the experts"; "This question completely threw me"; "This question befuddled even the teacher"

bedevil, befuddle, confound, confuse, discombobulate, fox, fuddle, throw

mistake one thing for another

"you are confusing me with the other candidate"; "I mistook her for the secretary"

confound, confuse