15-letter words containing d, o, u, r, e, s
- staggered hours — a system of working in which the employees of an organization do not all arrive and leave at the same time, but have large periods of overlap
- statutory order — a statute that applies further legislation to an existing act
- strontium oxide — a white insoluble solid substance used in making strontium salts and purifying sugar. Formula: SrO
- studhorse poker — stud poker.
- sulfur trioxide — an irritant, corrosive, low-melting solid, SO 3 , obtained by the oxidation of sulfur dioxide, used as an intermediate in the manufacture of sulfuric acid.
- sully-prudhomme — René François Armand [ruh-ney frahn-swa ar-mahn] /rəˈneɪ frɑ̃ˈswa arˈmɑ̃/ (Show IPA), 1839–1907, French poet: Nobel prize 1901.
- sulphur dioxide — a colourless soluble pungent gas produced by burning sulphur. It is both an oxidizing and a reducing agent and is used in the manufacture of sulphuric acid, the preservation of a wide range of foodstuffs (E220), bleaching, and disinfecting. Formula: SO2
- summer flounder — a flounder, Paralichthys dentatus, inhabiting shallow waters from Cape Cod to South Carolina, valued as food.
- summer holidays — the time when children do not go to school in the summer
- sunflower seeds — the seeds of a sunflower, which can be eaten
- superconfidence — great or extreme confidence, overconfidence
- superheterodyne — denoting, pertaining to, or using a method of processing received radio or video signals in which an incoming modulated wave is changed by the heterodyne process into a lower-frequency wave and then subjected to amplification and subsequent detection.
- superordination — Logic. the relation between a universal proposition and a particular proposition of the same quality containing the same terms in the same order.
- suppressor grid — an electrode placed between the screen grid and anode of a valve. Its negative potential, relative to both screen and anode, prevents secondary electrons from the anode reaching the screen
- thermodiffusion — thermal diffusion.
- to do your best — If you do your best or try your best to do something, you try as hard as you can to do it, or do it as well as you can.
- to good purpose — with a good result or effect; advantageously
- tricotyledonous — having three cotyledons.
- troubled waters — a confused or chaotic state of affairs: The situation was terrible, but like many politicians he was attracted by troubled waters.
- turn inside out — If you say that something has been turned inside out, you mean that it is the opposite of what you expect or think it should be.
- two-thirds rule — a former rule in the Democratic Party, effective 1832–1936, requiring a vote of at least two thirds of its national convention delegates to nominate a presidential and vice-presidential candidate.
- ultra-modernist — very advanced in ideas, design, or techniques.
- un-considerable — rather large or great in size, distance, extent, etc.: It cost a considerable amount. We took a considerable length of time to decide.
- unadventurously — in an unadventurous manner
- unconstrainedly — in an unconfined manner
- uncorresponding — identical in all essentials or respects: corresponding fingerprints.
- undemonstrative — not given to open exhibition or expression of emotion, especially of affection.
- under one's hat — a shaped covering for the head, usually with a crown and brim, especially for wear outdoors.
- under sb's nose — If you do something under someone's nose, you do it right in front of them, without trying to hide it from them.
- under sb's roof — If something happens under your roof, it happens in your home.
- under suspicion — suspected of a crime
- undercompensate — to compensate or pay less than is fair, customary, or expected.
- underestimation — to estimate at too low a value, rate, or the like.
- undress uniform — a uniform worn on other than formal occasions.
- universal donor — a person with blood of group O.
- unknown soldier — an unidentified soldier killed in battle and buried with honors, the tomb serving as a memorial to all the unidentified dead of a nation's armed forces. The tomb of the American Unknown Soldier, commemorating a serviceman killed in World War I, was established in the Arlington National Cemetery in Virginia in 1921. In 1958, the remains of personnel of World War II and the Korean War were buried alongside the tomb (now called the Tomb of the Unknowns, ). In 1984, a serviceman of the Vietnam War was interred next to the others.
- unpolished rice — a partly refined rice, hulled and deprived of its germ but retaining some bran.
- unprotected sex — an act of sexual intercourse or sodomy performed without the use of a condom, thus involving the risk of sexually transmitted diseases
- unprotectedness — the state of being unprotected or defenceless against attack
- unreconstructed — stubbornly maintaining earlier positions, beliefs, etc.; not adjusted to new or current situations: an unreconstructed conservative.
- unskilled labor — work that requires practically no training or experience for its adequate or competent performance.
- well-understood — simple past tense and past participle of understand.