Is “Viper” a Scrabble word?
Yes
VIPER
Valid in at least one Scrabble dictionary
Valid in these dictionaries
SOWPODS / CSW
Scrabble UK & International
TWL / NWL
Scrabble North America
Large English Dictionary
General English word list
Meaning of Viper
/ˈvaɪpɚ/
noun
1.A venomous snake in the family Viperidae.
2.A dangerous, treacherous, or malignant person.
3.A person who smokes marijuana.
Synonyms: adder