Vigorous, strong.

Quick, active; stout, brave.

Spirited, brisk, lively, mettlesome, valiant. Obsolete.

Alert, active, sprightly; brisk, quick.

Alert, nimble, active, brisk, quick.

Moving briskly, active, lively, agile; energetic in action; actively occupied, busy, bustling.

That makes a leap or other sudden movement; characterized by such movements; †bounding, full of energy (obsolete); impulsive, nervous; bursting forth.

Active, energetic, eager; (also) giving rise to action.

Active, energetic, vigorous. Obsolete. rare.

Characterized by busy or lively activity; engaging or ready to engage in physically energetic pursuits; alert, lively; busy.

Of a person. Skilled, clever, sharp. Obsolete. rare.

Swift, active.

Animated, vivacious; jolly, cheerful.

With all the appearance of being alive. Chiefly in alive and alive-like: alive and likely to live, alive and well. Cf. lifelike, adj. 2.

Busy, active; businesslike, methodical; brisk, energetic. Obsolete.

Of a person or his or her behaviour or demeanour: lively, brisk, spry. Also in extended use. Now rare (chiefly Scottish in later use). Cf. sprucy…

= agile, adj. 1a.

Sharp or smart in regard to movement (in a praiseworthy sense) quick and active, lively. of persons. (Sometimes used of disposition = ‘cheery…

With reference to personal qualities, attributes, behaviour, etc. Of demeanour, appearance, etc.: alert, animated; brisk, smart.

Of brisk nature. Also figurative.

= alive-like, adj.

Displaying or characterized by alacrity; brisk, lively; = alacritous, adj.

Alert, energetic; spec. (chiefly Military) having a brisk and orderly bearing, esp. combined with a neatness of appearance (cf. sense 13c). Also…

Bright-eyed. Obsolete. rare.

Of a person: Moving actively, brisk, lively, smart. slang or colloquial ? Obsolete.

Full of deeds or activity; active. Also, earnest, serious.

Moving or acting with rapidity or energy; stirring. Obsolete. rare.

Brisk, active; smart, spruce.

Jaunty, lively, assertive; inquisitive; anxious. In later use: recovering, becoming stronger. Cf. perk, v.2 1b.

Quick to act, respond, or understand; mentally or intellectually active; lively, animated.

That leaps or pours out, or springs up; bounding; exulting, rapturous; active, alert.

Displaying or characterized by alacrity; brisk, lively.

Alert; full of vivacity or animation; (chiefly in metaphorical contexts) wide awake.

dialect. Brisk, lively.

Lively, brisk.

Active, nimble, smart, brisk; full of health and spirits.

Brisk, active; alert, smart; in good health and spirits.

Of a person, his or her features, etc.: full of energy or animation; active, lively, brisk.

having gearing in which the ratio between the driving mechanism and the driven wheel is large; (in extended use) fast-moving, active.

Scottish and English regional (northern). Esp. of an elderly person: active, vigorous, hearty; spry, agile.

slang. Full of spirit, smartness, or ‘go’.

slang (originally U.S.). Of a person: full of energy and alertness; active, up to date. Now rare.

Full of deeds, active, effective.

Quick, sharp; alert, energetic; wary, wide awake; rising early.

U.S. regional (chiefly southern and south Midland). Lively in movement or demeanour; brisk, spry. Cf. spruce, adj.2 1.

Displaying or characterized by alacrity; brisk, lively. Cf. alacrious, adj.

Active, quick. Also as adv. U.S.

U.S. Active, alert, wide-awake, energetic.

In various colloquial phrases: up and about, around, active, moving about, esp. of a person who has been ill, no longer in bed; up and doing, busy…

Active, agile. Newfoundland dialect.

colloquial (originally U.S.) bright-eyed and bushy-tailed: alert and enthusiastic; energetic; eager.

Of a person: excited, euphoric, experiencing a buzz (buzz, n.1 2b); active, lively; over-stimulated.