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"
To throw into utter disorder and confusion, as if by the agency of evil spirits; to bring under diabolical influence; to torment
be·dev·il bedevils bedevilling bedevilled in AM, use bedeviling, bedeviled If you are bedevilled by something unpleasant, it causes you a lot of problems over a period of time. His career was bedevilled by injury. a problem that has bedevilled service industries for decades. = beset. to cause a lot of problems and difficulties for someone or something over a period of time = plague