n.
  - an abnormally high body temperature, usually accompanied by shivering, headache, and in severe instances, delirium.
 - a state of nervous excitement or agitation. 
▸general excitement about a public event:
 election fever.
 
 
  Derivative
  
    - feverish adj.
  - feverishly adv.
  - feverishness n.
 
   
  Etymology
  OE fēfor, from L. febris; reinforced in ME by OFr. fievre, also from febris.