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

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"

• demoralize — confuse or put into disorder
• perplex, vex, get, puzzle, mystify, baffle, beat, pose, bewilder, flummox, stupefy, nonplus, gravel, amaze, dumbfound — be a mystery or bewildering to
• disorient, disorientate — cause to be lost or disoriented

• be — have the quality of being; (copula, used with an adjective or a predicate noun)