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Word of the Day Tuesday, June 9, 2026

flu

/fluː/ noun · British & US
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What does flu mean?

noun

An infectious disease caused by the influenza virus, characterized by fever, cough, and muscle aches. It is highly contagious and can be spread through the air when an infected person talks, coughs, or sneezes.

Example

"She had the flu for a week and was feeling miserable."

Definition generated by AI and curated by RJS Tech Solutions LLP.

Synonyms for flu

Rhymes with flu

Etymologically related