To feverishly is to do something with a lot of energy and enthusiasm. You might be feverishly cleaning your house, or you might be feverishly working on a project.
She was feverishly scrubbing the kitchen floor.
He was feverishly painting the house.
ADV
in a feverish manner
1
The days are feverish with suppressed excitement and concealed animosities.
2
The community was in feverish expectation.
3
The movement is feverish and slow.
4
He returns with the items but is feeling feverish.
5
Foreman approaches and finds him feverish.
6
Connolly had not slept and seemed feverish.
7
They looked kind of feverish last night.
8
All levels of society share a feverish interest.
9
Last night he was feverish and lethargic and cranky.
10
The Evangelical Christian community's feverish response is also chronicled.