This is the 13900th most frequent German word.
fieberten
"Fieberten" is the past tense (preterite) of "fiebern," meaning "to have a fever" or metaphorically "to be excited/nervous about something" in English.
The word 'fieberten' in this sentence is used figuratively to convey a sense of eager anticipation or intense excitement.
Die Fans fieberten dem Konzert entgegen.
The fans were eagerly anticipating the concert.
In this sentence, 'fieberten' is used literally to describe the condition of having a fever.
Nach der anstrengenden Wanderung fieberten mehrere Teilnehmer.
After the strenuous hike, several participants were feverish.
Here, 'fieberten' is again used metaphorically to express a state of hopeful and intense anticipation.