catchy

From catch +‎ -y.

catchy (comparative catchier, superlative catchiest)

(of a tune or phrase) Instantly appealing and memorable.
- 2012 June 3, 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)‎:
  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.”
(dated, chiefly figurative) Tending to catch or ensnare; entangling.
a catchy question
(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.
Contagious; catching.
- 1941, Florence LaGanke Harris, Hazel Hanna Huston, The New Home Economics Omnibus:
  The catchy cold which has been transmitted to you directly or indirectly might have been avoided had you been in better physical condition.

instantly appealing and memorable

English