19-letter words containing o, n, s, p
- welsh mountain pony — a small sturdy but graceful breed of pony used mostly for riding, originally from Wales
- western yellow pine — ponderosa pine.
- what's your poison? — what would you like to drink?
- whorfian hypothesis — Sapir-Whorf hypothesis.
- with your eyes open — If you say that you did something with your eyes open or with your eyes wide open, you mean that you knew about the problems and difficulties that you were likely to have.
- xenotransplantation — xenograft.