Viperine
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Of or pertaining to a viper or vipers; resembling a viper.Viperine snake. (Zoöl.) (a) Any venomous snake of the familyViperidæ. (b) A harmless snake resembling a viper in form or color,esp. Tropidonotus viperinus, a small European species which resemblesthe viper in color.
Viperine meaning & definition 1 of Viperine.