toxic

Danger! Hazardous! Do not eat! These are just some of the warnings you'll see on toxic substances — meaning stuff that's poisonous and even deadly.

Cobra bites, wild mystery mushrooms and strong chemicals are all toxic. So are certain people, if they have particularly mean personalities. Toxic is related to the word toxin, which is a kind of poison. It comes from the ancient Greek word toxikon, which means "poison for arrows." Some toxic arrows could come in handy for those toxic personalities...

Definitions of toxic
1

adj of or relating to or caused by a toxin or poison

“suffering from exposure to toxic substances”
Synonyms:
harmful
causing or capable of causing harm
unhealthful
detrimental to good health
noxious
injurious to physical or mental health
cyanogenetic, cyanogenic
capable of producing cyanide
deadly, venomous, virulent
extremely poisonous or injurious; producing venom
hepatotoxic
toxic to the liver
nephrotoxic
toxic to the kidney
ototoxic
toxic to the organs of hearing or balance or to the auditory nerve
poisonous, toxicant
having the qualities or effects of a poison
Antonyms:
atoxic, nontoxic
not producing or resulting from poison
harmless
not causing or capable of causing harm
antitoxic
counteracting a toxin or poison
non-poisonous, nonpoisonous
not producing poison
nonvenomous
not producing venom
show more antonyms...

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