Letters that make viper
e, p, r, i, v are letters that make 'viper'
vipers, Vipera are words created by adding a letter to 'viper'
1 possible definitions for 'viper'
Under this definition, viper is a noun and has the following properties:
adder, common viper, Vipera berus, asp viper, Vipera aspis, Bitis arietans, Bitis gabonica, horned viper, cerastes, Cerastes cornutus, pit viper, gaboon viper, horned asp, puff adder, sand viper, asp are types of 'viper'.
'viper' can be a member of Viperidae, family Viperidae.