'Poisonously' definitions:

Definition of 'poisonously'

From: WordNet
adverb
In a very malevolent manner [syn: poisonously, venomously]

Definition of 'Poisonously'

From: GCIDE
  • Poisonous \Poi"son*ous\, a. Having the qualities or effects of poison; venomous; baneful; corrupting; noxious. --Shak. -- {Poi"son*ous*ly}, adv. -- {Poi"son*ous*ness}, n. [1913 Webster]