a. Abnormally high body temperature.
b. Any of various diseases characterized by abnormally high body temperature.
a. A condition of heightened activity or excitement: a fever of anticipation.
b. A contagious, usually short-lived enthusiasm or craze: disco fever.
v. fe·vered, fe·ver·ing, fe·vers
To effect fever in.
To be or become feverish.
[Middle English, from Old English fefor and from Old French fievre, both from Latin febris.]
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2020 by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Indo-European & Semitic Roots Appendices
Thousands of entries in the dictionary include etymologies that trace their origins back to reconstructed proto-languages. You can obtain more information about these forms in our online appendices:
The Indo-European appendix covers nearly half of the Indo-European roots that have left their mark on English words. A more complete treatment of Indo-European roots and the English words derived from them is available in our Dictionary of Indo-European Roots.