Synonym: deadly, destructive, harmful, malignant, noxious, toxic, venomous. Similar words: poison, monotonously, monotonous, sonorous, gluttonous, cacophonous, poise, porpoise. Meaning: ['pɔɪznəs] 
adj. 1. having the qualities or effects of a poison 2. not safe to eat 3. marked by deep ill will; deliberately harmful.
adj. 1. having the qualities or effects of a poison 2. not safe to eat 3. marked by deep ill will; deliberately harmful. 
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31, It gives off a poisonous gas as it rots down.
32, Our cars pump out thousands of tonnes of poisonous fumes every year.
33, She was bitten on the ankle by a poisonous snake .
34, Beware - poisonous chemicals.
35, Thousands of fish were killed as a result of a discharge of poisonous chemicals from a nearby factory.
36, The child was given an emetic after he had swallowed some poisonous berries.
37, Some poisonous gases can enter the body by absorption through the skin.
38, Can you tell the the difference between poisonous mushrooms and edible varieties?
39, If more and more cars run in the street, a large volume of poisonous gas will be given off, polluting the atmosphere.
40, That poisonous bastard Lucett told Morris I was seeing his wife.
41, This medicine is poisonous.
42, The Geneva Protocol of 1925 prohibits the use of poisonous gases in war.
43, The pond water was strangled with poisonous weed.
44, Some paints contain lead,[http://sentencedict.com/poisonous.html] which can be poisonous.
45, Don't drink that -- it's poisonous!
46, Don't use holly or yew, they're poisonous.
47, The heat is simply poisonous.
48, Poisonous gases are produced by improperly burned fuel.
49, By the way, I don't keep any poisonous snakes.
50, The air smelled poisonous and dank.
51, Consequently poisonous gases arise to adversely affect the medium.
52, The adder is the only poisonous snake in Britain.
53, His tongue is a deadly poisonous serpent.
54, The toad's skin produces a poisonous substance.
55, The plant's white berries are extremely poisonous.
56, Even the poisonous dinitrophenol made a comeback.
57, Avoid skin contact with the stain: ferricyanide is poisonous.
58, Many of our rivers are full of poisonous chemicals.
59, The boy died after eating poisonous berries.
60, The experiment went wrong when the chemicals combined to form a poisonous gas.
More similar words: poison, monotonously, monotonous, sonorous, gluttonous, cacophonous, poise, porpoise, noisome, prison, orison, honour, prisoner, benison, liaison, iron out, jettison, garrison, imprison, pronoun, comparison, imprisoned, caparison, dishonour, pronounce, by comparison, pronounced, james madison, imprisonment, mispronounce.