1550s, "swift," from flight (n.1) + -y (2). Sense of "fickle or frivolous" is from 1768, perhaps from notion of "given to 'flights' of imagination." Related: Flightiness.
例文
1. He said I was too flighty to be a good supervisor.
彼は私が軽薄すぎて良い管理人になれないと言った。
2.She is too flighty to take care of young children.
彼女は無責任すぎて子供の世話ができない。
3.Isabelle was a frivolous little fool,vain and flighty .
イザベルは軽薄な小ばかで、自負して気まぐれだ。/dd>
4.'she was never flighty like you.
"彼女はあなたのようにでたらめを考えたことがない.
5.Lydhate paraded flighty ,foreign notions which would not wear.