13-letter words containing r, u, d, a, s
- dolichosaurus — any of various extinct Cretaceous aquatic reptiles that had long necks and bodies and well-developed limbs
- dolphinariums — Plural form of dolphinarium.
- double spread — any pair of facing pages in a completed book, magazine, etc.
- doublespeaker — a person who uses doublespeak
- downregulates — Third-person singular simple present indicative form of downregulate.
- drama student — a student who is training to become an actor
- draughtboards — Plural form of draughtboard.
- draughtsboard — The board on which draughts is played, resembling a chessboard but (depending on the game variation) often having a side length of ten squares rather than eight.
- draughtswoman — Alternative spelling of draftswoman.
- dressy casual — (of clothes) informal yet expensive, smart, or stylish
- dromaeosaurid — A carnivorous bipedal dinosaur of a late Cretaceous family that included deinonychus and the velociraptors. They had a large slashing claw on each hind foot.
- dual controls — If a vehicle used by a driving instructor has dual controls, it has pedals on the passenger's side as well as on the driver's side to allow the driving instructor to brake should the learner try to move off when it is dangerous to do so
- durable goods — Durable goods or durables are goods such as televisions or cars which are expected to last a long time, and are bought infrequently.
- durable press — permanent press.
- durban poison — a particularly potent variety of cannabis grown in Natal
- dysregulation — A failure to regulate properly.
- easter sunday — Easter (def 2).
- edmund andros — Sir Edmund, 1637–1714, British governor in the American colonies, 1686–89, 1692–98.
- endurableness — (rare) The state of being endurable; endurability.
- figured glass — plate or sheet glass having a pattern rolled onto one side of the surface.
- fine adjuster — (jargon, tool, humour) A tool used for percussive maintenance, also known as a "hammer".
- flutterboards — Plural form of flutterboard.
- freudian slip — (in Freudian psychology) an inadvertent mistake in speech or writing that is thought to reveal a person's unconscious motives, wishes, or attitudes.
- garden suburb — a suburb of a large established town or city, planned along the lines of a garden city
- gelandesprung — a jump, usually over an obstacle, in which one plants both poles in the snow in advance of the skis, bends close to the ground, and propels oneself chiefly by the use of the poles.
- glucuronidase — an enzyme that catalyzes glucuronide hydrolysis
- good gracious — Some people say good gracious or goodness gracious in order to express surprise or annoyance.
- gourmandizers — Plural form of gourmandizer.
- grand duchess — the wife or widow of a grand duke.
- grandiloquous — grandiloquent
- great bustard — a large bustard, Otis tarda, of southern and central Europe and western and central Asia, having a wingspread of about 8 feet (2.4 meters).
- guard against — prevent
- gulf of sidra — a wide inlet of the Mediterranean on the N coast of Libya
- hard shoulder — The hard shoulder is the area at the side of a motorway or other road where you are allowed to stop if your car breaks down.
- hardship fund — funding offered or applied for due to financial difficulties
- harlequinades — Plural form of harlequinade.
- hazardousness — The condition of being hazardous.
- holy saturday — the Saturday in Holy Week.
- holy thursday — Ascension Day.
- house-trained — housebroken.
- household art — any of the skills necessary to the efficient running of a household, as cooking or keeping a family budget.
- hudson strait — a strait connecting Hudson Bay and the Atlantic. 450 miles (725 km) long; 100 miles (160 km) wide.
- hyaluronidase — Biochemistry. a mucolytic enzyme found in the testes, in snake venom, and in hemolytic streptococci and certain other bacteria, that decreases the viscosity of the intercellular matrix by breaking down hyaluronic acid.
- hydrocephalus — an accumulation of serous fluid within the cranium, especially in infancy, due to obstruction of the movement of cerebrospinal fluid, often causing great enlargement of the head; water on the brain.
- hydrosulphate — a salt formed by the direct union of sulfuric acid with an organic base, especially an alkaloid, and usually more soluble than the base.
- indian summer — a period of mild, dry weather, usually accompanied by a hazy atmosphere, occurring usually in late October or early November and following a period of colder weather.
- indisturbance — Freedom from disturbance; calmness; repose.
- industrialise — Non-Oxford British standard spelling of industrialize.
- industrialism — an economic organization of society built largely on mechanized industry rather than agriculture, craftsmanship, or commerce.
- industrialist — a person who owns or is involved in the management of an industrial enterprise.