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Very hot water? (5)

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

• Quick crossword No 16,651 — 2023-09-17 23:00:12
  15D: Water vapour (5)
• Quick crossword No 15,579 — 2020-04-12 23:00:56
  11A: What powered old engines (5)
• Quick crossword No 15,326 — 2019-06-20 23:00:26
  13D: Very hot water? (5)