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]
Words nearby run a fever
rumpy-pumpy,
rumrunner,
rumsey,
rumsfeld,
run,
run a fever,
run a risk,
run a temperature,
run a tight ship,
run across,
run afoul of