MUPPET

Weak person (informal) (6)

Solution has appeared in 2 crosswords (2 across and 0 down):

• Quick crossword No 16,172 — 2022-03-08 00:00:55
  17A: Miss Piggy or the Great Gonzo? (6)
• Quick crossword No 15,664 — 2020-07-20 23:00:26
  1A: Weak person (informal) (6)