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run a fever

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run a fever

to have a high body temperature caused by an illness He developed a very bad ear infection and ran a fever for a couple of days.

See also: fever, run

run a fever

Also, run a temperature. Suffer from a body temperature higher than normal, as in She was running a fever so I kept her home from school. These idioms use run in the sense of "cause to move," in this case upward. [Early 1900s]

See also: fever, run