15-letter words starting with u
- unseaworthiness — constructed, outfitted, manned, and in all respects fitted for a voyage at sea.
- unselfconscious — not self-conscious; without affectation or pretense: an unselfconscious manner.
- unskilled labor — work that requires practically no training or experience for its adequate or competent performance.
- unsophisticated — not sophisticated; simple; artless.
- unsportsmanlike — a man who engages in sports, especially in some open-air sport, as hunting, fishing, racing, etc.
- unstatesmanlike — not resembling or befitting a political leader whose wisdom, integrity, etc win great respect
- unsteadfastness — the condition of being unsteadfast
- unsubstantiated — not substantiated; unproved or unverified: unsubstantiated allegations.
- unteachableness — the quality or condition of being unteachable
- untraditionally — in an untraditional fashion; not traditionally
- untransmigrated — not transmigrated; not transferred or caused to be transferred
- untransmissible — intransmissible
- untrustworthily — in an untrustworthy manner; not trustworthily
- unverifiability — the quality or state of being unverifiable
- up one's sleeve — secretly ready
- up one's street — (just) what one knows or likes best
- up to your ears — If you are up to your ears in something, it is taking up all of your time, attention, or resources.
- up to your eyes — If you say that you are up to your eyes in something, you are emphasizing that you have a lot of it to deal with, and often that you are very busy.
- upper arlington — a city in central Ohio, near Columbus.
- upper east side — a section of the East Side of New York City, conventionally between 57th Street and 96th Street, known for its affluence.
- upper extremity — arm
- upper peninsula — a peninsula in the northern US between Lakes Superior and Michigan, constituting the N part of the state of Michigan
- upperclasswoman — An upperclasswoman is a junior or senior student in a high school, college, or university.
- upright freezer — a freezer that is tall rather than wide
- upsetting lever — the horizontal distance between the center of gravity, acting downward, and the center of buoyancy, acting upward, when they are so placed as to form a couple (upsetting couple) tending to capsize the boat.
- upward mobility — movement from one social level to a higher one (upward mobility) or a lower one (downward mobility) as by changing jobs or marrying.
- upwardly mobile — See under vertical mobility (def 1).
- uralian emerald — demantoid: not a true emerald.
- uranium dioxide — a black, crystalline compound, UO 2 , insoluble in water, used in nuclear fuel rods, in ceramics, and pigments.
- uranium-bearing — containing or producing uranium
- urban guerrilla — a member of any underground political group engaged in terrorism or violence in urban areas, especially during the 1970s.
- urban migration — the process of people moving from rural areas to cities
- urban sociology — the sociological study of cities and their role in the development of society.
- urinary bladder — a distensible, muscular and membranous sac, in which the urine is retained until it is discharged from the body.
- url redirection — (web) (Or "URL forwarding") When a web server tells the client browser to obtain a certain requested page from a different location. This is controlled by directives in the server's configuration files or a "Location: header output by a CGI script. The web server stores all its documents in a directory tree rooted at some configured directory, known as its "document root". Normally the URI part of the URL (the part after the hostname) is used as a relative path from the document root to the desired file or directory. A redirect directive allows the server administrator to specify exceptions to this general mapping from URL to file name by telling the browser "try this URL instead". The new URL may be on the same server or a different one and may itself be subject to redirection. The user is normally unaware of this process except that it may introduce extra delay while the browser sends the new request and the browser will usually display the new URL rather than the one the user originally requested.
- uropygial gland — a gland opening on the back at the base of the tail in most birds that secretes an oily fluid used by the bird in preening its feathers.
- urquhart castle — a castle near Drumnadrochit in Highland, Scotland: situated on Loch Ness
- us savings bond — A US Savings bond is a long-term bond issued by the US government that is considered low-risk.
- user experience — Digital Technology. the perception and response of a person toward design elements of software or digital media while interacting with it. Abbreviation: UX.
- usman dan fodio — 1754–1817, African mystic and revolutionary leader, who created a Muslim state in Nigeria
- ust-kamenogorsk — a city in E Kazakhstan, on the Irtysh River.
- utility company — a company which supplies utilities, such as gas, electricity, phones, etc
- utility program — system software used to perform standard operations, as sorting data or copying data from one file to another, for application programs or other system software.
- utility vehicle — A utility vehicle is a vehicle that is designed to travel over rough ground.
- utopia planitia — Astronomy. a plain in the northern hemisphere of Mars that was the landing site of the Viking II space probe on September 3, 1976.
- utter barrister — a barrister belonging to the outer bar.