catchy

adjective4

1. •
   Instantly appealing and memorable.

   • Eric wrote a catchy tune to play on his acoustic guitar while Alyssa plays the drums.
   • This hook is so catchy that I can't stop listening to it!
2. •
   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
3. •
   (figurative, old-fashioned) Tending to catch or ensnare; entangling.
4. •
   (old-fashioned) Consisting of, or occurring in, disconnected parts or snatches; changeable.

   • Encyc. of Sport It [the fox's scent] is […] flighty or catchy, if variable.