1. confuse, throw, fox, befuddle, fuddle, bedevil, confound, discombobulate, be
usage: 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"
usage: perplexed by many conflicting situations or statements; filled with bewilderment; "obviously bemused by his questions"; "bewildered and confused"; "a cloudy and confounded philosopher"; "just a mixed-up kid"; "she felt lost on the first day of school"