1. Of or relating to or characterized by fever
   "a feverish reaction caused by an allergen";
   - febrile
    
2. Having or affected by a fever
   "The feverish child tossed and turned in her sleep";
   - feverous
    
3. Marked by intense agitation or emotion
   "worked at a feverish pace";
   - hectic

See also: agitated, ill, sick

Encyclopedia: Feverish