Collins Russian Dictionary 2nd Edition © HarperCollins Publishers 2000, 1997:
feverish [ˈfiːvərɪʃ] adj (also fig) лихора́дочный*лихора́дочен (person, with excitement) возбуждённый*возбуждён
he is feverish у него́ жар, его́ лихора́дит
* is used to mark translations which have irregular inflections. The Russian-English side of the dictionary gives inflectional information.
Русский: