/ ˈdʒɔːnti; NAmE / adjective
1.
showing that you are feeling confident and pleased with yourself
SYN cheerful :
a jaunty smile
2.
lively :
a jaunty tune
► jaunt·ily adverb :
He set off jauntily, whistling to himself.
► jaunti·ness noun [ U ]
••
WORD ORIGIN
mid 17th cent. (in the sense well-bred, genteel ): from French gentil high-born, noble (see gentle , genteel ).