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The feeling that you have the flu, A word to describe the symptoms that are incorperated with the flu.
Man 1: "Man this stomache ache is killing me."
Man 2: "Yeah, you do look kind of fluish."

Doctor: "Could you describe your symptoms?"
Man: "Well, I have a headache, a stomache ache, and I feel very fluish."
by Duff/Pesosky October 24, 2006