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poisonous

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poisonous/ˈpoɪzn̩nəs/adjective
poisonous
/ˈpoɪzn̩nəs/
adjective
Learner's definition of POISONOUS  
[more poisonous; most poisonous]
: causing sickness or death by entering or touching the body: containing poison
   b : capable of putting poison into another animal's body by biting it
: very harmful or unpleasant

— poisonously

adverb
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