viperino

Etymology
From.

Adjective

 * 1) viperine
 * 2) venomous (real and figurative)

Noun

 * 1) young viper

Adjective

 * 1) viperine relating to or resembling vipers
 * 2) serpentine; sly; deceitful

Adjective

 * 1) viperine
 * 2) cunning, wicked