OPENMOUTHED

Visibly astonished (4-7)

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

• Quick crossword No 16,205 — 2022-04-14 23:00:14
  13A: Gobsmacked (4-7)
• Quick crossword No 16,192 — 2022-03-30 23:00:31
  7D: Visibly astonished (4-7)