The Collaborative International Dictionary
Viperine \Vi"per*ine\ (?; 277), a. [L. viperinus: cf. F. vip['e]rin.] Of or pertaining to a viper or vipers; resembling a viper. Viperine snake. (Zo["o]l.)
Any venomous snake of the family Viperid[ae].
A harmless snake resembling a viper in form or color, esp. Tropidonotus viperinus, a small European species which resembles the viper in color.
Douglas Harper's Etymology Dictionary
1540s, from Latin viperinus "pertaining to a viper or vipers," from vipera (see viper).
Wiktionary
a. Of or relating to a viper or vipers; resembling a viper.
WordNet
Usage examples of "viperine".
Nine years ago, when Zeldornius and I made ready to decide our quarrels by battle, word came to me in a lucky hour how that this Helteranius with cunning colubrine and malice viperine and sleights serpentine went about to attack me in the rear.