13-letter words containing n, i, s, h, a
- unwhistleable — incapable of being whistled
- vanishing act — a vanishing act is when someone is impossible to contact, or disappears from public view
- vapourishness — the quality or state of being vapourish
- vasa murrhina — an American art glass, consisting of colored glass dusted with flakes or grains of metal and flashed with clear glass.
- vashon island — an island in Puget Sound, W central Washington, between Seattle and Tacoma. 37 sq. mi. (96 sq. km).
- vasoinhibitor — an agent, as a drug, that inhibits the action of the vasomotor nerves.
- visakhapatnam — a seaport in Andhra Pradesh, in E India, on the Bay of Bengal.
- walking horse — Tennessee walking horse.
- wappenshawing — (formerly) the reviewing of the men under arms in a Scottish lordship or district
- washingtonian — living in or coming from Washington, D.C., or the state of Washington.
- weatherliness — (nautical) The quality of being weatherly.
- whimsicalness — Whimsicality.
- whiskerandoed — having extravagant whiskers
- white arsenic — arsenous acid
- white russian — Byelorussian (def 2).
- white-slaving — traffic in white slaves.
- wild huntsman — the leader of the Wild Hunt, often associated with Odin.
- wilhelmshaven — a seaport in NW Germany, NW of Bremen, on the North Sea.
- windsor chair — a wooden chair of many varieties, having a spindle back and legs slanting outward: common in 18th-century England and in the American colonies.
- winter squash — any of several varieties of Cucurbita maxima or C. moschata that mature in late autumn and are used, when ripe, as a vegetable.
- withdrawnness — The state or condition of being withdrawn or isolated.
- within reason — a basis or cause, as for some belief, action, fact, event, etc.: the reason for declaring war.
- wood shavings — shavings of wood, as found in a carpenter's workshop etc
- wordsworthian — William, 1770–1850, English poet: poet laureate 1843–50.
- world-shaking — of sufficient size or importance to affect the entire world: the world-shaking effects of an international clash.
- xanthochroism — a condition in certain animals, esp aquarium goldfish, in which all skin pigments other than yellow and orange disappear
- xiphiplastron — the fourth lateral plate of a turtle's plastron
- yachtsmanship — The ability or art of being adept at sailing a yacht.
- yuan shih-kai — 1859–1916, president of China 1912–16.
- zarathustrian — Zoroaster.
- zinc sulphate — a colourless soluble crystalline substance usually existing as the heptahydrate or monohydrate: used as a mordant, in preserving wood and skins, and in the electrodeposition of zinc. Formula: ZnSO4
- zinjanthropus — the genus to which Australopithecus boisei was formerly assigned.