S: (v) affect (act physically on; have an effect upon) "the medicine affects my heart rate"
S: (v) change, alter, modify (cause to change; make different; cause a transformation) "The advent of the automobile may have altered the growth pattern of the city"; "The discussion has changed my thinking about the issue"
S: (v) 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"