18-letter words containing f, i, n, s, h, a
- sulfuric anhydride — sulfur trioxide.
- sutton-in-ashfield — a market town in N central England, in W Nottinghamshire. Pop: 41 951 (2001)
- the bird has flown — the person in question has fled or escaped
- the final solution — the code name used by the Nazis to refer to the plan of mass murder of the Jews
- thorfinn karlsefni — 980–after 1007, Icelandic navigator, explorer, and leader of early colonizing expedition to Vinland, in North America.
- transmission shaft — a shaft that rotates transmitting motion from the engine to the differential gear
- under the aegis of — guided or protected by