Word.ws English Dictionary

Plural of flu

regular plural

The plural of flu is flus.

Forms of flu

Singularflu /fluː/
Pluralflus /fluːz/
Countableusually uncountable

Flus in a sentence

  • While H5N1 flu is obviously lethal, some milder flus pose a greater societal threat, Professor Mathews says.2010, Malcolm Knox, The Monthly, April 2010, Issue 55, The Monthly Ptd Ltd, page 46. From the entry societal
  • The current H1N1 virus (swine flu) is a mixture of avian flus that passed through pigs to humans.2010, Malcolm Knox, The Monthly, April 2010, Issue 55, The Monthly Ptd Ltd, page 44. From the entry H1N1

Meaning of flu

  1. noun Influenza.
  2. noun Stomach flu.

Full definition of flu

Questions about the plural of flu

What is the plural of flu?
The plural of flu is flus.
Is flu countable?
Flu is usually an uncountable noun; its plural is used for kinds or examples of it.

Source and license

Adapted from Wiktionary: flu (page history and authors) and the entries of its forms. Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws left out forms marked obsolete, archaic, rare or dialectal and added the examples. Wiktionary data of 2026-09-02.

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Cite this page: “Plural of flu.” Word.ws, https://word.ws/plural/flu. Based on Wiktionary, CC BY-SA 4.0.