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Definition of viper noun from the Oxford Advanced Learner's Dictionary

viper

noun
 
/ˈvaɪpə(r)/
 
/ˈvaɪpər/
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  1. a small poisonous snakeTopics Animalsc2
  2. (formal) a person who harms other people
  3. Word Originearly 16th cent.: from French vipère or Latin vipera, from vivus ‘alive’ + parere ‘bring forth’.
See viper in the Oxford Advanced American Dictionary

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