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