poisonously

adv

1. In a poisonous manner.

   “c. 1900, Thomas Edison, quotation The x-ray had affected poisonously my assistant, Mr. Dally.”

   “To Edward […] he was terrible, nerve-inflaming, poisonously asphyxiating. He sat rocking himself in the late Mr. Churchill's swing chair, smoking and twaddling.”

2. (obsolete)Using poison.