Webster's Revised Unabridged Dictionary · 1913

Brisk

Brisk (brisk) , adjective

[Compare Welsh brysg, from brys haste, Gael. briosg quick, lively, Ir. broisg a start, leap, jerk.]

1.
Full of liveliness and activity; characterized by quickness of motion or action; lively; spirited; quick.
Cheerily, boys; be brick awhile. — Shakespeare
Brisk toil alternating with ready ease. — Wordworth
2.
Full of spirit of life; effervescing, as liquors; sparkling; as, brick cider.

Brisk ({not transcribed}) , verb, transitive and intransitive

To make or become lively; to enliven; to animate; to take, or cause to take, an erect or bold attitude; -- usually with up.