That does, acts, performs, etc.; spec. actively engaged or occupied, busy; energetic.

Of a person: = mettlesome, adj. 1c.

Of a person, the mind, etc.: spirited; full of energy, vigour, or animation; assertive, determined, bold. Cf. spirited, adj. 2a.

Of a person: full of spirit; of a lively, animated, or energetic disposition; characterized by courageous, assertive, or determined behaviour. Also…

(attributive). Spirited, feisty; lively, eager, willing. Also: brave, courageous. In later use Scottish and English regional (northern). Obsolete.

That is or has a free spirit; lively and independent; unconstrained by convention.

Having or characterized by considerable courage or spirit; (esp. of a horse) lively, headstrong. Cf. mettlesome, adj.

Sprightly; lively, vigorous.

Of a person or personal attribute: having a distinctive lively or spirited quality; full of 'go'. Obsolete.

Of a person: high-spirited, vivacious, playful. Also: courageous, brave.

Characterized by prompt vigour of action; spirited, lively, impetuous.

figurative. In extended use: strong, powerful; lively, spirited; (in negative contexts) unpleasant, objectionable.

Characterized by animation or spirit.

Given to fizz. Also figurative.

Full of ‘zip’ (zip, n.1 1b); bright, lively, energetic; fresh, invigorating.