From The Collaborative International Dictionary of English v.0.48 [gcide]:
Bedevil \Be*dev"il\, v. t. [imp. & p. p. Bedevilled (?); p.
pr. & vb. n. Bedeviling or Bedevilling.]
1. To throw into utter disorder and confusion, as if by the
agency of evil spirits; to bring under diabolical
influence; to torment.
[1913 Webster]
Bedeviled and used worse than St. Bartholomew.
--Sterne.
[1913 Webster]
2. To spoil; to corrupt. --Wright.
[1913 Webster]
From WordNet (r) 3.0 (2006) [wn]:
bedevil
v 1: treat cruelly; "The children tormented the stuttering
teacher" [syn: torment, rag, bedevil, crucify,
dun, frustrate]
2: 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" [syn: confuse, throw, fox, befuddle,
fuddle, bedevil, confound, discombobulate]