Related Clues:

• Having an adverse effect on living things
• Very spiteful
• Like guilt-trippers, say
• Very harmful
• Like cobras, but not pythons
• Very unhealthy
• Like cyanide
• Certain tank descriptor
• Poisonous planet housing silly moo
• Not sterilized
• Extreme opposite of ''nutritious''
• Like azaleas, to cats and dogs
• 'Don't you know that you're ___?' (Britney Spears lyric)
• Poisonous, as chemicals
• Poisonous beef consumed in short moment