1
2
: any of several virus diseases marked especially by respiratory or intestinal symptoms
flu-like adjective

Examples of flu in a Sentence

He came down with a bad bout of the flu.
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.
Nationally, childhood flu vaccine coverage is down 7.1 points compared to the same time last year. Adam Tamburin, Axios, 17 Dec. 2024 There have been five flu deaths thus far this season in the state. Shari Rudavsky, The Indianapolis Star, 16 Dec. 2024 Research suggests flu viruses in high humidity can cling to water molecules and then fall out of the air. Eduardo Cuevas, USA TODAY, 16 Dec. 2024 Bird flu symptoms in humans include typical flu-like symptoms such as eye redness, sore throat, runny nose, cough, diarrhea, vomiting, body aches, fatigue, trouble swallowing or fever. Jamie Gumbrecht, CNN, 11 Dec. 2024 See all Example Sentences for flu 

Word History

Etymology

by shortening

First Known Use

1839, in the meaning defined at sense 1

Time Traveler
The first known use of flu was in 1839

Dictionary Entries Near flu

Cite this Entry

“Flu.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/flu. Accessed 23 Dec. 2024.

Kids Definition

flu

noun
1
2
: any of several virus diseases that are something like a cold
flu-like
ˈflü-ˌlīk
adjective

Medical Definition

flu

noun
1
2
: any of several chiefly viral illnesses marked especially by respiratory or gastrointestinal symptoms see intestinal flu
flu-like adjective
also flulike
flu-like symptoms

More from Merriam-Webster on flu

Last Updated: - Updated example sentences
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