What is another word for flu?
Pronunciation: [flˈuː] (IPA) 
Flu, also known as influenza, is a highly contagious respiratory illness caused by the influenza virus. But there are other terms used to describe this condition, including grippe, catarrh, and the common cold. Grippe is a French term that denotes flu-like symptoms, including fever, headache, and muscle aches. Catarrh refers to the inflammation of the mucous membranes in the respiratory tract, which is a common symptom of flu. The common cold is similar to the flu but has milder symptoms, such as a runny nose and sore throat. While these terms may refer to slightly different conditions, they are all part of the wider family of respiratory illnesses.
