plague rat

noun

A rat which acts as a vector of the plague; a sewer rat.

Meanings

nounplague rat (plural plague rats)

plural plague rats

  1. A rat which acts as a vector of the plague; a sewer rat.

    She was found to be one of the type of white women whose nasal organs appear never to have been developed, and who take to the loathsome Mongolian and his filthy hovel as blithely as a plague rat to a sewer.

    1903 February 8, The Truth, Sydney, page 3, column 4
  2. derogatoryneologismSomeone who refuses to follow anti-pandemic rules and guidelines or even takes actions, such as attending unnecessary events, that promote the spread of illness.

    It’s a simple concept. You’re either contributing to humanity’s fight against this pestilence or you’re a plague rat. Don’t be a plague rat.

    2021 July 23, Ed Hutcheson, “Letters: Take your medicine - Relearn the lessons of the 1600's”, in The Palm Beach Post, archived from the original on 04 Feb 2022
    2 more examples

    This Plague Rat is planning superspreader events across the country and complaining that he and all of his prosperity gospel pals are “under attack”.

    2020 September 14, Ezra Lloyd, “Meet Sean Feucht: The Plague Rat Throwing ‘Worship Protests’ to Maskless Audiences Across The Country”, in Salt, archived from the original on 04 Feb 2022

    People are waxing their surfboards, or whatever surf-people do, waxing their bodies, polishing up their summer reading lists, and googling sangria recipes: preparing to live their best plague-rat lives. This whole thing is crazy, and makes me uneasy.

    2022 January 2, Joel Maxwell, “I won't, can't, go home this summer”, in Sunday Star-Times, Wellington, New Zealand, page 14

Origin

Modern sense coined during the COVID-19 pandemic as a reference to rats being a common carrier of disease, possibly also looking at the role of rats in the Black Plague and influenced by the use of "rat" as a derogatory insult in general.

Full word history & related roots →
Cite this entry
APA

plague rat. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/plague%20rat

MLA

“plague rat.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/plague%20rat. Accessed November 4, 2026.

Chicago

WatkinsX Dictionary, s.v. “plague rat,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/plague%20rat.

Source: plague rat on Wiktionary, CC BY-SA 4.0.