15-letter words containing e, s, p, o, u, i
- superinvolution — an act or instance of involving or entangling; involvement.
- superior planet — any of the five planets whose orbits are outside the orbit of the earth, namely, the planets Mars, Jupiter, Saturn, Uranus, and Neptune.
- superordination — Logic. the relation between a universal proposition and a particular proposition of the same quality containing the same terms in the same order.
- superpatriotism — the quality of being superpatriotic
- supplementation — the act or process of supplementing.
- supporting role — acting: secondary part
- 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
- supreme council — the legislature of the former Soviet Union and its successor states, consisting of an upper house (Soviet of the Union or Council of the Union) whose delegates are elected on the basis of population, and a lower house (Soviet of Nationalities or Council of Nationalities) whose delegates are elected to represent the various nationalities.
- surreptitiously — obtained, done, made, etc., by stealth; secret or unauthorized; clandestine: a surreptitious glance.
- suspension file — a folder for documents that has protruding ends that can be hung over rails for storage
- symmetric group — the group of all permutations of a finite set.
- synectics group — a group of people of varied background that meets to attempt creative solutions of problems through the unrestricted exercise of imagination and the correlation of disparate elements.
- tetrasporangium — a sporangium containing four asexual spores.
- ultramicroscope — an instrument that uses scattering phenomena to detect the position of objects too small to be seen by an ordinary microscope.
- uncompassionate — having or showing compassion: a compassionate person; a compassionate letter.
- uncomprehensive — of large scope; covering or involving much; inclusive: a comprehensive study of world affairs.
- uncompromisable — that cannot or should not be compromised
- uncorresponding — identical in all essentials or respects: corresponding fingerprints.
- under suspicion — suspected of a crime
- unpolished rice — a partly refined rice, hulled and deprived of its germ but retaining some bran.
- unprepossessing — that impresses favorably; engaging or attractive: a confident and prepossessing young man.
- unpretentiously — without pretension
- unprogressively — in an unprogressive manner
- unprotestantize — to make something (e.g. a church, country, etc) a religion other than Protestant
- unsophisticated — not sophisticated; simple; artless.
- unsportsmanlike — a man who engages in sports, especially in some open-air sport, as hunting, fishing, racing, etc.
- viper's bugloss — the blueweed.
- white corpuscle — white blood cell.
- whoopee cushion — a type of cushion or pillow used as a practical joke that, when sat upon, produces a loud noise resembling flatulence.
- win one's spurs — a U -shaped device that slips over and straps to the heel of a boot and has a blunt, pointed, or roweled projection at the back for use by a mounted rider to urge a horse forward.
- yorke peninsula — a peninsula in S Australia between Spencer Gulf and the Gulf of St. Vincent. 160 miles (257 km) long and 20–35 miles (32–56 km) wide.