Definition of "viperous" []

• Suggestive of or related to a viper. (adjective)
• Venomous; malicious. (adjective)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "Expect a resolution in tonight's 90-minute finale, and while Jax is unlikely to end up dead (the series has been renewed), the viperous ATF rogue (Ally Walker) does hold the whip hand."
• "Sadly, a lot of Christians buy into the idea that they can be sweet as Danish in church but viperous at home."
• "After deflecting a spate of viperous glances and a loud resounding “No!”"