SPLEEN

Bitterness — organ of the body (6)

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

• Quick crossword No 16,048 — 2021-10-12 23:00:05
  17D: Abdominal organ — bad temper (6)
• Quick crossword No 15,452 — 2019-11-15 00:00:04
  19A: Quick temper — spite (6)
• Quick crossword No 15,276 — 2019-04-23 23:00:07
  16D: Bitterness — organ of the body (6)