Dictionary.com
Thesaurus.com
Synonyms

viperous

American  
[vahy-per-uhs] / ˈvaɪ pər əs /

adjective

  1. of the nature of or resembling a viper.

    a viperous movement.

  2. of or relating to vipers.

  3. characteristic of vipers.

  4. venomous.


viperous British  
/ ˈvaɪpərəs /

adjective

  1. Also: viperine.  of, relating to, or resembling a viper

  2. malicious

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Other Word Forms

Etymology

Origin of viperous

First recorded in 1525–35; viper + -ous

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Otherwise, the script prunes the couple’s legal battle down to one scene with Ivy’s viperous lawyer, played by Allison Janney, who brings a rottweiler to the showdown and claims it’s her service animal.

From Los Angeles Times • Aug. 28, 2025

I was particularly disappointed by Tatiana Maslany, as the viperous young exec Diana Christensen, who would sell her soul for ratings if only she had one to begin with.

From The New Yorker • Dec. 10, 2018

She gives herself a quick, amusing makeover, slipping on a trench coat and dyeing her hair blond, a tint that evokes Barbara Stanwyck’s viperous vamp in “Double Indemnity.”

From New York Times • Mar. 29, 2018

Tellingly, we notice these characters only when the family does; they are otherwise as invisible to us as they are to Georges, Anne and the rest of their viperous brood.

From Los Angeles Times • Dec. 21, 2017

And yet, are we not taught that our animal nature is throughout equally viperous?

From Yeast: a Problem by Kingsley, Charles

Vocabulary.com logo
by dictionary.com

Look it up. Learn it forever.

Remember "viperous" for good with VocabTrainer. Expand your vocabulary effortlessly with personalized learning tools that adapt to your goals.

Take me to Vocabulary.com