Comparative form of flighty: more flighty(adjective)
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Use "flightier" in a sentence
"The Tweet is mightier and flightier than the sword."
"But if I seem a little bit flightier than usual, you know why."
"While being a writer would be a whole lot more fun if completing a good book could be accomplished merely by consorting with her flightier muse sisters, party girls at heart, sooner or later, we all need to appeal to Ataraxia for help."