EARWORM

Irritatingly catchy tune (7)

Solution has appeared in 2 crosswords (1 across and 1 down):

• Quick crossword No 16,245 — 2022-05-31 23:00:00
  24A: Annoying tune — more war (anag) (7)
• Quick crossword No 15,556 — 2020-03-17 00:00:39
  15D: Irritatingly catchy tune (7)