FLIPFLOP

Flimsy sandal (4-4)

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

• Quick crossword No 15,889 — 2021-04-09 23:00:50
  7A: Make abrupt changes of policy (4-4)
• Quick crossword No 15,271 — 2019-04-17 23:00:08
  12D: Flimsy sandal (4-4)