fever UK /ˈfiːvə/US /ˈfivɚ/noun 5verb 2forms 4phrases 3 noun5 •a state in which the body is hotter than normal, usually because of an illnessThere has been a rise in my fever. I think I've the flu. •A state of excitement or anxiety. •[in compounds] Any of various diseases. •[in compounds] (slang, offensive) Sexual attraction towards a specific group of people. •A group of stingrays.On the way back to the mainland the boat passed over a fever of stingrays, and the sight of them through the glass was enough to colour everything else, and outstrip it. — 2011 verb2 •To put into a fever; to affect with fever. •To become fevered. formsfevered · fevering · fevereth · fevers Phrases with fever buck feverExcitement and nervousness felt by a new hunter upon seeing game. fever pitchExtreme excitement. spring feverA feeling of invigoration and restlessness associated with the arrival of the warm weather and renewal of nature in the spring season.