LAGGING

Insulation — failing to keep up (7)

Solution has appeared in 2 crosswords (0 across and 2 down):

• Quick crossword No 16,375 — 2022-10-31 00:00:40
  2D: Falling behind (7)
• Quick crossword No 15,408 — 2019-09-24 23:00:10
  14D: Insulation — failing to keep up (7)