catchy

a. 1. Apt or tending to catch the fancy or attention; catching; taking; as, catchy music. [ Webster 1913 Suppl. ]

2. Tending to catch or insnare; entangling; -- usually used fig.; as, a catchy question. [ Webster 1913 Suppl. ]

3. Consisting of, or occuring in, disconnected parts or snatches; changeable; as, a catchy wind. [ Webster 1913 Suppl. ]

It [ the fox's scent ] is . . . flighty or catchy, if variable. Encyc. of Sport. [ Webster 1913 Suppl. ]