n. [ L. vivicitas: cf. F. vivacité. ] The quality or state of being vivacious. Specifically: -- [ 1913 Webster ] (a) Tenacity of life; vital force; natural vigor. [ Obs. ] [ 1913 Webster ] The vivacity of some of these pensioners is little less than a miracle, they lived so long. Fuller. [ 1913 Webster ] (b) Life; animation; spiritedness; liveliness; sprightliness; as, the vivacity of a discourse; a lady of great vivacity; vivacity of countenance. [ 1913 Webster ] Syn. -- Liveliness; gayety. See Liveliness. [ 1913 Webster ] | 