\Vi*va"cious\ (?; 277), a. [L. v['i]vax, -acis, fr.
vivere to live. See {Vivid}.]
1. Having vigorous powers of life; tenacious of life;
   long-lived. [Obs.]
         Hitherto the English bishops have been vivacious
         almost to wonder. . . . But five died for the first
         twenty years of her [Queen Elizabeth's] reign.
                                               --Fuller.
         The faith of Christianity is far more vivacious than
         any mere ravishment of the imagination can ever be.
                                               --I. Taylor.
2. Sprightly in temper or conduct; lively; merry; as, a
   vivacious poet. ``Vivacious nonsense.'' --V. Knox.
3. (Bot.) Living through the winter, or from year to year;
   perennial. [R.]
Syn: Sprightly; active; animated; sportive; gay; merry;
     jocund; light-hearted. -- {Vi*va"cious*ly}, adv. --
     {Vi*va"cious*ness}, n.