1
: consisting of or being vermin : noxious
2
: forming a breeding place for or infested by vermin : filthy
verminous garbage
3
: caused by vermin
verminous disease

Examples of verminous in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Men, women and children languished there in conditions of almost unimaginable squalor, brutality, overcrowding, starvation, verminous infestation and neglect. — Patrick McGrath, New York Times, 28 June 2018

Word History

Etymology

vermin + -ous, probably originally after Latin verminōs "infested with maggots," from vermin- (base of vermināre "to be affected with griping pains, to be infested with maggots"—latter sense by false association with vermis "worm"—derivative of vermina "racking pains") + -ōsus -ose entry 1

First Known Use

circa 1616, in the meaning defined at sense 1

Time Traveler
The first known use of verminous was circa 1616

Browse Nearby Words

Cite this Entry

“Verminous.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/verminous. Accessed 3 Oct. 2026.

Medical Definition

verminous

adjective
1
: consisting of, infested with, or being vermin
2
: caused by parasitic worms
verminous gastritis
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

More from Merriam-Webster