poisonous

poi·son·ous

adj \ˈpȯiz-nəs, ˈpȯi-z^ən-əs\

Definition of POISONOUS

1

: destructive, harmful

2

: having the properties or effects of poison : venomous

3

: spiteful, malicious

— poi·son·ous·ly adverb

Examples of POISONOUS

1. Chocolate is poisonous to dogs.
2. This species of spider is extremely poisonous.

First Known Use of POISONOUS

1565

Related to POISONOUS

Synonyms: envenomed, poison, poisoned, toxic, venomous

Antonyms: nonpoisonous, nontoxic, nonvenomous

Related Words: contagious, infectious, infective, pathogenic, pestilent, pestilential; baneful, deleterious, harmful, hurtful, injurious, malignant, nocuous, noxious, virulent; unhealthful, unhealthy, unwholesome; calamitous, deadly, fatal, fell, lethal, murderous

Near Antonyms: beneficial, curative, healthful, healthy, helpful, palliative, remedial, salubrious, salutary, wholesome; benign, harmless, innocuous, inoffensive; nonfatal, nonlethal

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