Definition of nattiness in US English:

nattiness

noun

informal
  • See natty

    • ‘But it's not like they'll be able to show off their new-found nattiness.’
    • ‘The nattiness and pizzazz I've described are intentionally amusing.’
    • ‘Alternating between blase nonchalance and brisk nattiness, the author was the matinee idol for fans and scholars alike.’
    • ‘Ms. Prada's collection is all British nattiness, with the tailoring coming from high-tech stretch fabrics and the richness from waves of bottle green, camels and grays.’
    • ‘There is a kind of theatrical nattiness to his outfit today.’

Pronunciation

nattiness

/ˈnædinəs//ˈnadēnəs/