Noah Webster
Brisk
BRISK, adjective [This word may be of the same family with frisk, and fresh, which see.]
1. Lively; active; nimble; gay; sprightly; vivacious; applied to animals; as a brisk young man; a brisk cyder.
2. Full of spirit or life; effervescing, as liquors; as brisk cyder.
3. Lively; burning freely; as a brisk fire.
4. Vivid; bright; as, a glass makes an object appear brisk [Not used.]
BRISK UP, verb transitive To make lively; to enliven; to animate.
BRISK UP, verb intransitive To come up with life and speed; to take an erect, or bold attitude.