viperous

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adjective vi·per·ous \ˈvī-p(ə-)rəs\

Definition of viperous

  1. 1 :  viperine

  2. 2 :  having the qualities attributed to a viper :  malignant, venomous the backstabbing of a viperous family

viperously

adverb

First Known Use of viperous

1535

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