'Banefully' definitions:

Definition of 'banefully'

(from WordNet)
adverb
In a noxiously baneful way; "this banefully poisoned climate" [syn: banefully, perniciously]

Definition of 'Banefully'

From: GCIDE
  • Baneful \Bane"ful\, a. Having poisonous qualities; deadly; destructive; injurious; noxious; pernicious. "Baneful hemlock." --Garth. "Baneful wrath." --Chapman. [1913 Webster] -- {Bane"ful*ly}, adv. --{Bane"ful*ness}, n. [1913 Webster]