toxic

US /ˈtɑksɪk/

UK /ˈtɒksɪk/

B2

adjective

  • Very harmful or unpleasant in a pervasive or insidious way.
  • Poisonous; harmful
  • Poisonous and capable of causing death or serious illness.
  • (Of relationships) harmful; causing conflict

Examples

potentially toxic chemicals

This chemical is toxic to many forms of life.