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.
Source: Webster's 1828 American Dictionary ↗ · public-domain · returned verbatim, no AI