16-letter words containing a, s, h, t, o
- typhoid bacillus — the bacterium Salmonella typhosa, causing typhoid fever.
- upper atmosphere — the portion of the atmosphere above the troposphere.
- voluntary school — a school that promotes specific religious beliefs and which is funded by a local education authority but was not established by the authority
- walrus moustache — a long thick moustache drooping at the ends
- washington state — the state of Washington, especially as distinguished from Washington, D.C.
- washington thorn — a dense tree, Crataegus phaenopyrum, of the rose family, native to the eastern coast of the U.S., having triangular leaves, small clusters of white flowers, and clusters of bright red fruit.
- washington, d. c — Booker T(aliaferro) [boo k-er tol-uh-ver] /ˈbʊk ər ˈtɒl ə vər/ (Show IPA), 1856–1915, U.S. reformer, educator, author, and lecturer.
- washington, d.c. — Booker T(aliaferro) [boo k-er tol-uh-ver] /ˈbʊk ər ˈtɒl ə vər/ (Show IPA), 1856–1915, U.S. reformer, educator, author, and lecturer.
- watch one's step — a movement made by lifting the foot and setting it down again in a new position, accompanied by a shifting of the weight of the body in the direction of the new position, as in walking, running, or dancing.
- watson-wentworth — Charles, 2nd Marquis of Rockingham [rok-ing-uh m] /ˈrɒk ɪŋ əm/ (Show IPA), 1730–82, British statesman: prime minister 1765–66, 1782.
- way of the cross — stations of the cross.
- weather advisory — advisory (def 5).
- weather forecast — meteorological prediction
- what's the odds? — what difference does it make?
- whatever sb does — You say whatever you do when giving advice or warning someone about something.
- white sandalwood — the fragrant heartwood of any of certain Asian trees of the genus Santalum, used for ornamental carving and burned as incense.
- white wood aster — a composite plant, Aster divaricatus, of North America, having flat-topped clusters of white ray flowers and growing in dry woods.
- whole-tone scale — a scale progressing entirely by whole tones, as C, D, E, F♯, G♯, A♯, C.
- wholeheartedness — fully or completely sincere, enthusiastic, energetic, etc.; hearty; earnest: a wholehearted attempt to comply.
- woody nightshade — bittersweet (def 3).
- worth one's salt — a crystalline compound, sodium chloride, NaCl, occurring as a mineral, a constituent of seawater, etc., and used for seasoning food, as a preservative, etc.
- yah-boo politics — adversarial politics in which politicians constantly deride their opponents and dismiss everything suggested by them