adjective: jaunty; comparative adjective: jauntier; superlative adjective: jauntiest
having or expressing a lively, cheerful, and self-confident manner.
"there was no mistaking that jaunty walk"
synonyms: cheerful, cheery, happy, merry, jolly, joyful, gleeful, glad; More
lively, vivacious, perky, full of life, bright, sunny, buoyant, bubbly, bouncy, breezy, frisky, full of the joys of spring, in good spirits, exuberant, ebullient, effervescent, sparkling, sparkly, sprightly, spry;
carefree, unworried, untroubled, without a care in the world, blithe, airy, light-hearted, nonchalant, insouciant, happy-go-lucky, free and easy, easy-going, blasé, devil-may-care, casual, relaxed;
informalbright-eyed and bushy-tailed, full of beans, sparky, upbeat, go-go, chirpy, chipper, peppy, zippy, zappy, full of vim and vigour;
archaicblithesome, perk, as merry/lively as a grig, wick
"he wore a cap pushed to one side to give him a jaunty air"
antonyms: depressed, serious, sedate
Funny how it also means an angle between 15.2 and 17.8 degrees