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“viperine”
viperine: viper
1. Resembling a viper or that of a viper; having the nature or character of a viper; venomous, viperous; viper-like.
2. Etymology: from Old French, from Latin vipera, snake; a contraction of vivipera; vivus, "alive" + parere, "to give birth".
2. Etymology: from Old French, from Latin vipera, snake; a contraction of vivipera; vivus, "alive" + parere, "to give birth".