QUISLING

Traitorous collaborator (8)

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

• Quick crossword No 16,706 — 2023-11-21 00:00:09
  1D: Collaborator with an occupying enemy (8)
• Quick crossword No 15,533 — 2020-02-19 00:00:40
  10A: Traitorous collaborator (8)