CHUMP

Fool (informal) (5)

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

• Quick crossword No 16,697 — 2023-11-10 00:00:06
  19A: Idiot; cut of mutton or lamb (5)
• Quick crossword No 16,255 — 2022-06-12 23:00:00
  15D: Fool (informal) (5)