pizazz

noun Informal.

1. energy; vitality; vigor.
2. attractive style; dash; flair.

n.also pizzaz; pizzazz, 1937, probably originally college or show-biz slang. Pizazz, to quote the editor of the Harvard Lampoon, is an indefinable dynamic quality, the je ne sais quoi of function; as for instance, adding Scotch puts pizazz into a drink. Certain clothes have it, too. [“Harper’s Bazaar,” March 1937]