noun, plural vi·vac·i·ties for 1.
- the quality or state of being vivacious.
- liveliness; animation; sprightliness: a people noted for their vivacity.
- a vivacious act or statement.
noun plural -ties
- the quality or condition of being vivacious
- (often plural) rare a vivacious act or expression
early 15c., from Latin vivacitatem (nominative vivacitas) “vital force, liveliness,” from vivax (genitive vivacis) “lively,” also “long-lived,” from vivere “to live” (see vital).