Definition of brisk :
1. Full of liveliness and activity; characterized by quickness of motion or action; lively; spirited; quick.
2. Full of spirit of life; effervescng, as liquors; sparkling; as, brick cider.
3. To make or become lively; to enliven; to animate; to take, or cause to take, an erect or bold attitude; - usually with up.
bouncy, dapper, jocund, diligent, merry, festive, howling, impertinent, alive, officious, tremendous, terrific, refreshed, jovial, awake, refreshing, live, facile, spirited, strenuous, forceful, enterprising, snappish, bouncing, marvellous, bracing, prompt, spanking, energising, novel, restless, racy, dynamical, snappy, jolly, fresh, saucy, stimulating, expeditious, brisken, mobile, gay, action, tonal, springy, nippy, wide awake, jaunty, unused, fantastic, full of life, rakish, agile, sweet, resilient, whipping, wonderful, festal, new, watchful, ability, busy, nimble, smart, driving, wise, rattling, unfermented, reinvigorated, brisk up, supple, dynamic, sassy, impudent, accented, spruce, industrious, refreshful, invigorated, invigorating, spry, sprightly, zippy, kinetic, wondrous, clean, energizing, tonic, grand, marvelous, spiffy, ready, raffish, nipping, mirthful, peppy, natty, energetic, overbold
hasty (part of speech: adjective)
severe (part of speech: adjective)
dour, critical, acerbic, acute, brusque, astringent, stringent, stark, puritanical, cutting, crisp, austere, short, ascetic, stiff-necked, piquant, strict, oppressive, gruff, strait-laced, rigid, exacting, frosty, keen, dry, hidebound, stern, spare, grim, correct, blunt, obstinate, authoritarian, intolerant, rigorous, meticulous, bleak, fundamental, intense, icy, tart, cool, precise, acrimonious, relentless, caustic, raw, severe, curt, disciplined, lean, imperial, sharp, inflexible, unbending, censorious, obdurate, chilly, uncompromising, Spartan, prudish, demanding, Draconian, basic, harsh
lively (part of speech: adjective)
- The action throughout is brisk and pleasing; the characters, it is apparent at once, are as true to life as though the author had known them all personally. - "Her Mother's Secret", Emma D. E. N. Southworth.
- He helped Billy carry the now unconscious woman upstairs, and gave Susan brisk orders. - "Saturday's Child", Kathleen Norris.
- The driver cracked his whip, and the horse started at a brisk trot down the dark country road. - "The Firm of Girdlestone", Arthur Conan Doyle.