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| Main Entry: | |
| Part of Speech: | adjective |
| Definition: | poisonous |
| Synonyms: | bad*, baleful, baneful, corrupt, corruptive, dangerous, deadly, deleterious, destructive, detrimental, evil, fatal, hurtful, infective, lethal, malicious, malignant, mephitic, mephitical, miasmatic, morbid, mortal, nocuous, noisome, noxious, peccant, pernicious, pestiferous, pestilential, poison, septic, toxic, toxiferous, venomous, vicious, viperous, virulent |
* = informal/non-formal usage
| Main Entry: | poison/poisonous |
| Part of Speech: | adjective |
| Definition: | harmful |
| Synonyms: | bad, baleful, baneful, corrupt, corruptive, dangerous, deadly, deleterious, destructive, detrimental, evil, fatal, hurtful, infective, lethal, malicious, malignant, mephitic, miasmatic, morbid, mortal, nocuous, noisome, noxious, peccant, pernicious, pestiferous, pestilential, septic, toxic, toxicant, toxiferous, venomous, vicious, viperous, virulent |
| Antonyms: | aiding, antidotal, assisting, curing, healing, helpful |
| Main Entry: | toxic |
| Part of Speech: | adjective |
| Definition: | poisonous |
| Synonyms: | baneful, deadly, harmful, lethal, mephitic, noxious, pernicious, pestilential, poison, septic, toxicant, venomous, virulent |
| Antonyms: | harmless, nonpoisonous |
| Main Entry: | toxin |
| Part of Speech: | noun |
| Definition: | poison |
| Synonyms: | blight, cancer, contagion, contamination, germ, infection, noxious substance, poisonous substance, toxicant, toxoid, venom, virus |
| Main Entry: | venomous |
| Part of Speech: | adjective |
| Definition: | poisonous; hateful |
| Synonyms: | accidentally on purpose, antagonistic, baleful, baneful, catty, cussed, deadly, destructive, dirty, evil, hostile, lethal, malefic, malevolent, malicious, malign, malignant, mean, mephitic, noxious, ornery*, rancorous, savage, spiteful, toxic, toxicant, vicious, vindictive, viperish, viperous, virulent, waspish |
| Antonyms: | kind, praising, unpoisonous |
* = informal/non-formal usage
| Main Entry: | virulent |
| Part of Speech: | adjective |
| Definition: | poisonous, lethal |
| Synonyms: | baneful, deadly, destructive, fatal, harmful, infective, injurious, malign, malignant, mephitic, pernicious, poison, septic, toxic, toxicant, unhealthy, unwholesome, venomous |
| Antonyms: | harmless, healthy, nonpoisonous |
| Main Entry: | poisonous |
| Part of Speech: | adjective |
| Definition: | harmful |
| Synonyms: | bad, baleful, baneful, corrupt, corruptive, dangerous, deadly, deleterious, destructive, detrimental, evil, fatal, hurtful, infective, lethal, malicious, malignant, mephitic, miasmatic, morbid, mortal, nocuous, noisome, noxious, peccant, pernicious, pestiferous, pestilential, poison, septic, toxic, toxicant, toxiferous, venomous, vicious, viperous, virulent |
| Antonyms: | benevolent, harmless, non-toxic |
| Main Entry: | mephitical |
| Part of Speech: | adjective |
| Definition: | poisonous |
| Synonyms: | bad, baleful, baneful, corrupt, corruptive, dangerous, deadly, deleterious, destructive, detrimental, evil, fatal, hurtful, infective, lethal, malicious, malignant, mephitic, miasmatic, morbid, mortal, nocuous, noisome, noxious, peccant, pernicious, pestiferous, pestilential, poison, septic, toxic, toxicant, toxiferous, venomous, vicious, viperous, virulent |
| Main Entry: | pestilential |
| Part of Speech: | adjective |
| Definition: | virulent |
| Synonyms: | baneful, deadly, destructive, fatal, harmful, infective, injurious, malign, malignant, mephitic, noxious, pernicious, pestilent, poison, septic, toxic, toxicant, unhealthy, unwholesome, venomous |
Roget's 21st Century Thesaurus, Third Edition
Copyright © 2013 by the Philip Lief Group.
Cite This Source
Copyright © 2013 by the Philip Lief Group.
Cite This Source
Copyright © 2013 Dictionary.com, LLC. All rights reserved.
