The Collaborative International Dictionary of English v.0.48:
Jauntiness \Jaun"ti*ness\, n. The quality of being jaunty. [1913 Webster] That jauntiness of air I was once master of. --Addison. [1913 Webster]WordNet (r) 3.0 (2006):
jauntiness n 1: stylishness as evidenced by a smart appearance [syn: jauntiness, nattiness, dapperness, rakishness] 2: a breezy liveliness; "a delightful breeziness of manner" [syn: breeziness, jauntiness]