INCOGNITO

With one's identity concealed (9)

Solution has appeared in 3 crosswords (1 across and 2 down):

• Quick crossword No 16,009 — 2021-08-27 23:00:20
  20A: Anonymous(ly) (9)
• Quick crossword No 15,392 — 2019-09-05 23:00:21
  7D: Without revealing who you are (9)
• Quick crossword No 15,184 — 2019-01-07 00:00:15
  6D: With one's identity concealed (9)