poisonously
poi·so·nously
adverb
1.
in a very malevolent manner
Origin
From poisonous + -ly.
Related words
Pertaining to
WordNet 2.1 (Princeton University). Wiktionary (CC BY-SA). WordNet 2.1 Copyright Princeton University. All rights reserved. Wiktionary content is available under the Creative Commons Attribution-ShareAlike Licence.