YEAH

OK (4)

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

• Quick crossword No 16,593 — 2023-07-11 23:00:00
  22A: I agree (informal) (4)
• Quick crossword No 16,199 — 2022-04-07 23:00:05
  18D: Affirmative (informal) (4)
• Quick crossword No 15,794 — 2020-12-19 00:00:33
  10A: OK (4)