1. Of or relating to or caused by a toxin or poison
   "suffering from exposure to toxic substances"
    
2. Unpleasant and damaging or offensive
   "a toxic relationship"; "toxic language"
    
3. Harmful or very unpleasant and provocative
   "he condemned the toxic language"
    
4. (finance) very likely to yield a large loss
   "The bank was left holding toxic assets after the housing market crash"

See also: cyanogenetic, cyanogenic, deadly, harmful, hepatotoxic, nephrotoxic, noxious, ototoxic, poisonous, toxicant, unhealthful [rare], unhealthy, venomous, virulent

Antonym: atoxic

Encyclopedia: Toxic