flighty

"Today’s young women know that neurotic isn’t cute. Cute isn’t cute. Neither is flustered, madcap, zany, flighty, flaky, harried or hapless - all adjectives that apply to Bridget."

Wrens "are very flighty," he says with a laugh.

I’m strolling through the neighborhood, trying to get eyes on a flighty hummingbird, when I reach the corner.

Tristán, vain and flighty, can hardly concentrate on anything but his career.

It ought to be a great role for her but the movie is too shallow and flighty to do her justice.