ABRUPT

Unexpected — precipitous (6)

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

• Quick crossword No 16,350 — 2022-09-30 23:00:52
  4D: Blunt — rude (6)
• Quick crossword No 15,952 — 2021-06-22 23:00:11
  16D: Surprisingly brusque (6)
• Quick crossword No 15,567 — 2020-03-29 23:00:07
  13A: Sudden and unexpected (6)
• Quick crossword No 15,489 — 2019-12-30 00:00:51
  16D: Unexpected — precipitous (6)