This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

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adj. Full of animation and spirit; lively: a charming and vivacious host.

adj. Lively and animated; full of life and energy.

adj. Long-lived.

adj. Difficult to kill.

adj. Having vigorous powers of life; tenacious of life; long-lived.

adj. Sprightly in temper or conduct; lively; merry.

adj. Living through the winter, or from year to year; perennial.

Perennial: sometimes applied to plants which live from year to year.

Having vigorous powers of life; long-lived; tenacious of life.

Lively; active; sprightly in temper or conduct; proceeding from or characterized by sprightliness.

Synonyms Animated, brisk, gay, merry, jocund, lighthearted, sportive, frolicsome. See animation.

adj. vigorous and animated

""I detest them all!" replied she, shaking her bright ringlets in vivacious scorn."

spirited   

long-lived   

animated    sprightly    merry    jocund    gay    light-hearted    active    sportive    long-lived    lively   

Ignatius    audacious    capacious    ceraceous    crustaceous    efficacious    fallacious    flirtatious    gracious    hellacious   

lively    affable    talkative    genial    witty    sprightly    jovial    buoyant    energetic    comely