ASSERT

Maintain formally (6)

Solution has appeared in 4 crosswords (3 across and 1 down):

• Quick crossword No 16,513 — 2023-04-09 23:00:03
  13A: State categorically (6)
• Quick crossword No 16,047 — 2021-10-11 23:00:02
  7D: State categorically (6)
• Quick crossword No 15,868 — 2021-03-17 00:00:01
  15A: Claim (6)
• Quick crossword No 15,185 — 2019-01-08 00:00:27
  12A: Maintain formally (6)