catchy

Etymology

catch + -y

adj

1. Instantly appealing and memorable (of a tune or phrase).
   The best of friends become the worst of enemies when Barney makes a hilarious attack ad where he viciously pummels a cardboard cut-out of Homer before special guest star Linda Ronstadt joins the fun to both continue the attack on the helpless Homer stand-in and croon a slanderously accurate, insanely catchy jingle about how “Mr. Plow is a loser/And I think he is a boozer.” June 3, 2012, Nathan Rabin, “TV: Review: THE SIMPSONS (CLASSIC): “Mr. Plow” (season 4, episode 9; originally aired 11/19/1992)”, in (Please provide the book title or journal name)
2. (dated, chiefly figurative) Tending to catch or ensnare; entangling.
   a catchy question
3. (dated) Consisting of, or occurring in, disconnected parts or snatches; changeable.
   a catchy wind
   Encyc. of Sport It [the fox's scent] is […] flighty or catchy, if variable.
4. Contagious; catching.
   The catchy cold which has been transmitted to you directly or indirectly might have been avoided had you been in better physical condition. 1941, Florence LaGanke Harris, Hazel Hanna Huston, The New Home Economics Omnibus