"jauntiest" in the adjective sense
1. dapper, dashing, jaunty, natty, raffish, rakish, spiffy, snappy, spruce
marked by up-to-dateness in dress and manners
"a dapper young man"
"a jaunty red hat"
2. chipper, debonair, debonaire, jaunty
having a cheerful, lively, and self-confident air
"looking chipper, like a man...diverted by his own wit"- Frances G. Patton
"life that is gay, brisk, and debonair"- H.M.Reynolds
"walked with a jaunty step"
"a jaunty optimist"
Source: WordNet® (An amazing lexical database of English)
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