ADJ-GRADED
輕浮的;見異思遷的;反復無常的
If you say that someone is flighty, you disapprove of them because they are not very serious or reliable and keep changing from one activity, idea, or partner to another.
例句
Isabelle was a frivolous little fool, vain and flighty.
伊莎貝爾是個輕佻、沒頭腦的小女人，非常虛榮又反復無常。