No, the word brisk is not an adverb.

The word brisk is a verb and an adjective.

The adverb form of the word "brisk" is briskly.

I hope you are able to enjoy a brisk recovery from your experience.

Grab your windbreaker; it's rather brisk out there.

The horn section interjected a brisk tempo to the otherwise slow tune.

Susanna Brisk is 5' 10".

The noun form of the adjective 'brisk' is briskness.

"The brisk autumn air was a welcome relief from the sweltering summer."

Ice-cream vendors were doing a brisk trade. " (selling a lot of ice cream)

"His tone became brisk and business-like."

"The breeze was cool, brisk, and invigorating."