15-letter words containing a, r, i, s, t, d
- the disappeared — people who have been arrested secretly or abuducted and presumably imprisoned or killed
- the first-named — something that is specified or named first
- thorndike's law — the principle that all learnt behaviour is regulated by rewards and punishments, proposed by Edward Lee Thorndike (1874–1949), US psychologist
- thursday island — an island in Torres Strait between NE Australia and New Guinea; part of Queensland: pearl fishing. 1½ sq. mi. (4 sq. km).
- tirso de molina — Luis [loo-ees] /luˈis/ (Show IPA), 1535–1600, Spanish Jesuit theologian.
- to make friends — If you make friends with someone, you begin a friendship with them. You can also say that two people make friends.
- trading profits — profits made from the buying and selling of goods and services
- trans-jordanian — of or relating to the former Trans-Jordan (now Jordan) or its inhabitants
- transfer window — the period during the year in which a football club can transfer players from other teams into their own
- transindividual — a single human being, as distinguished from a group.
- transvaal daisy — a composite plant, Gerbera jamesonii, native to southern Africa, having showy, many-rayed, variously colored flower heads.
- trapdoor spider — any of various, often large, spiders (esp. family Ctenizidae) that dig a burrow and cover the entrance with a hinged lid like a trapdoor
- treasure island — (italics) a novel (1883) by R. L. Stevenson.
- tricuspid valve — the valve, consisting of three triangular flaps of tissue between the right auricle and ventricle of the heart, that keeps blood from flowing back into the auricle.
- tristram shandy — a novel (1759–67) by Laurence Sterne.
- trojan asteroid — one of a number of asteroids that have the same mean motion and orbit as Jupiter, preceding or following the planet by a longitude of 60°
- ultra-modernist — very advanced in ideas, design, or techniques.
- ultrafastidious — extremely fastidious
- unconstrainedly — in an unconfined manner
- undemonstrative — not given to open exhibition or expression of emotion, especially of affection.
- underestimation — to estimate at too low a value, rate, or the like.
- understandingly — mental process of a person who comprehends; comprehension; personal interpretation: My understanding of the word does not agree with yours.
- unpractisedness — the quality or state of being unpractised
- untransmigrated — not transmigrated; not transferred or caused to be transferred
- upper east side — a section of the East Side of New York City, conventionally between 57th Street and 96th Street, known for its affluence.
- victoria island — an island off the coast of N Canada, in the Arctic Ocean. 80,340 sq. mi. (208,081 sq. km).
- well-advertised — to announce or praise (a product, service, etc.) in some public medium of communication in order to induce people to buy or use it: to advertise a new brand of toothpaste.
- wiener neustadt — a city in E Austria, in Lower Austria. Pop: 37 627 (2002)
- wild strawberry — uncultivated plant bearing red fruit
- winter holidays — a period of rest from work or studies taken in winter
- withdrawal slip — a small paper form which has to be filled in before making a withdrawal of money from a bank, building society, etc