verve 
(vûrv)
(vûrv)n.
1. Energy and enthusiasm in the expression of ideas, especially in artistic performance or composition: The revival lacked the verve of the original musical.
2. Vitality; liveliness. See Synonyms at vigor.
3. Archaic Literary aptitude or talent.
[French, from Old French, fanciful expression, probably from Vulgar Latin *verva, from Latin verba, pl. of verbum, word; see wer-5 in the Appendix of Indo-European roots.]