I. noun
something that harms, interferes with, or destroys the activity, progress, or welfare of something else
the negative publicity was poison for her political ambitions
Synonyms: bane, contagion, venom, virus
Related Word: adulteration, contamination, corruption, sophistication
Contrasted words: catholicon, elixir, panacea
Antonyms: antidote
II. verb
Synonyms: debase 1, animalize, bestialize, corrupt, debauch, demoralize, deprave, pervert, stain, warp
III. adjective
Synonyms: poisonous , mephitic, toxic, toxicant, venomous, virulent