From Middle English fever, fevere, from Old English fefer, fefor ("fever"), from Latin febris, from Proto-Indo-European *dʰegʷʰ-.

• (RP) IPA: /ˈfiːvə/
• (America) IPA: /ˈfivɚ/

fever

1. A higher than normal body temperature of a person (or, generally, a mammal), usually caused by disease.

   "I have a fever. I think I've the flu."

2. (usually, in combination with one or more preceding words) Any of various diseases.

   scarlet fever

3. A state of excitement or anxiety.
   • c. 1602, William Shakespeare, “The Tragedie of Troylus and Cressida”, in Mr. William Shakespeares Comedies, Histories, & Tragedies […] (First Folio), London: […] Isaac Iaggard, and Ed[ward] Blount, published 1623, →OCLC ↗, [Act I, scene ii]:

     an envious fever

4. (neologism) A group of stingrays.

• (higher than normal body temperature): high temperature, pyrexia (medical term), temperature
• (state of excitement): excitation, excitement, passion

• febrile
• fervent
• fervid
• fervor

• French: fièvre
• German: Fieber, Temperaturerhöhung
• Italian: febbre
• Portuguese: febre
• Russian: температу́ра
• Spanish: fiebre, calentura

• Russian: лихора́дка

• Russian: жар

fever (fevers, present participle fevering; simple past and past participle fevered)

1. To put into a fever; to affect with fever.

   a fevered lip

   • c. 1606–1607 (date written), William Shakespeare, “The Tragedie of Anthonie and Cleopatra”, in Mr. William Shakespeares Comedies, Histories, & Tragedies […] (First Folio), London: […] Isaac Iaggard, and Ed[ward] Blount, published 1623, →OCLC ↗, [Act III, scene xiii]:

     the white hand of a lady fever thee

2. To become fevered.