fever

fever pitch

if you say that a feeling or a situation has reached fever pitch, you mean that people's emotions have become so strong that they can only just control themselves. By the time the princess appeared on the balcony, excitement among the crowd was at fever pitch. Tension reached fever pitch as reports came in of further bomb attacks in the north.

See also: pitch

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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: run