9-letter words containing s, p, a, i
- vampirism — belief in the existence of vampires.
- vampishly — in a vampish manner
- vanaspati — a hydrogenated vegetable fat commonly used in India as a substitute for butter
- vaporings — instances of boasting
- vespasian — (Titus Flavius Sabinus Vespasianus) a.d. 9–79, Roman emperor 70–79.
- vitascope — one of the first motion-picture projectors, developed by Thomas Edison.
- walpurgis — Saint, a.d. c710–780, English missionary and abbess in Germany: feast day May 1.
- wash-wipe — a windscreen wiper
- waspishly — In a waspish manner.
- waypoints — Plural form of waypoint.
- wear ship — to change the tack of a sailing vessel, esp a square-rigger, by coming about so that the wind passes astern
- whipsawed — subjected to a double loss, as when an investor has bought a stock at a high price soon before it declines and then, in order to make good the loss, sells it short before it advances.
- whipsnake — any of several long, slender New World snakes of the genus Masticophis, the tail of which resembles a whip.
- whipstaff — a bar attached to a ship's tiller to assist with steering
- whipstall — a stall during a vertical climb in which the nose of the airplane falls forward and downward in a whiplike movement.
- whiptails — Plural form of whiptail.
- whitecaps — Plural form of whitecap.
- wingspans — Plural form of wingspan.
- wrappings — Plural form of wrapping.
- xeriscape — environmental design of residential and park land using various methods for minimizing the need for water use.
- ypsilanti — Alexander, 1792–1828, Greek patriot and revolutionary leader.