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Definitions

fever

[fee-ver] / ˈfi vər /
NOUN
state of high temperature or agitation
Synonyms
STRONGEST
delirium frenzy turmoil
STRONG
ecstasy excitement ferment fervor fire flush heat intensity passion pyrexia restlessness unrest
WEAK
burning up febrile disease running a temperature the shakes
Antonyms
STRONGEST
calmness peace
STRONG
apathy calm contentedness coolness dullness lethargy
WEAK
chill coldness freeze frigidity

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Flea-borne typhus infection symptoms include fever, headache, chills, body aches and a rash on or around the chest, sides and back.

From Los Angeles Times • Apr. 3, 2026

Artificial-intelligence fever is running so hot that retail investors are massively overpaying for pre-IPO shares.

From The Wall Street Journal • Mar. 29, 2026

Emma is an ambassador for Meningitis Now and has warned parents to look out for symptoms - these can start abruptly and progress rapidly, including a high fever, severe headache and vomiting.

From BBC • Mar. 26, 2026

Her parents from Blackwood, Caerphilly county, described how MenB wasn't immediately diagnosed, and warned others to look out for symptoms including high fever and vomiting.

From BBC • Mar. 26, 2026

Mr. Burke nudged him along, as if I had the red fever.

From "Willodeen" by Katherine Applegate

From Roget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the Philip Lief Group.