Catch″y (?), a. 1. Apt or tending to catch the fancy or attention; catching; taking; as, catchy music.
2. Tending to catch or insnare; entangling; — usually used fig.; as, a catchy question.
3. Consisting of, or occuring in, disconnected parts or snatches; changeable; as, a catchy wind.
It is... flighty or catchy, if variable. Encyc. of Sport.