1. A serpent, whose bite is venomous; a person or thing mischievous or malignant. Viper's bugloss, a plant of the genus echium. Viper's grass, a plant of the genus scorzonera.

Nuttall's Standard dictionary of the English language By Nuttall, P.Austin

• viwer,
• vizer,
• viery,
• siaper,
• cyper,
• hiper,
• wipper,
• wisper,
• veiwer,
• whiper,
• xipper,
• swiper,
• visier,
• vicer,
• juiper,
• vipors,
• vipe,
• winper,
• piwer,
• tipe

• vipera,
• viverra,
• vivier,
• vibrio.

The adjective form of the word "viper" is "viperine".

The plural of the "viper" can be the "vipers".

The singular of the "viper" can be the "viper".