CERTAINLY

Without doubt (9)

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

• Quick crossword No 15,322 — 2019-06-16 23:00:02
  11D: By all means (9)
• Quick crossword No 15,237 — 2019-03-09 00:00:03
  13A: Without doubt (9)