13-letter words containing i, n, p, r, o
- unpreoccupied — not preoccupied
- unpretentious — not pretentious; modest; without ostentatious display; plain: his unpretentious demeanor; an unpretentious summer resort.
- unproblematic — not problematic, not causing difficulties or confusion; uncomplicated
- unprogressive — favoring or advocating progress, change, improvement, or reform, as opposed to wishing to maintain things as they are, especially in political matters: a progressive mayor.
- unpromisingly — in a manner that is not showing any promise of favourable development or future success
- unprovisioned — a clause in a legal instrument, a law, etc., providing for a particular matter; stipulation; proviso.
- unprovocative — tending or serving to provoke; inciting, stimulating, irritating, or vexing.
- unprovokingly — serving to provoke; causing annoyance.
- unreproaching — not reproaching or blaming
- unresponsible — answerable or accountable, as for something within one's power, control, or management (often followed by to or for): He is responsible to the president for his decisions.
- upper chinook — a Chinookan language of the Columbia River valley from the Deschutes River to the estuary.
- upright piano — a piano with an upright rectangular body and with its strings running vertically. Compare spinet (def 1).
- uranite group — the mineralogical group including uranites and related minerals.
- vacation trip — a trip undertaken during a vacation
- vapor tension — vapor pressure.
- vapourishness — the quality or state of being vapourish
- vinyl polymer — any of a group of compounds derived by polymerization from vinyl compounds, as vinyl acetate and styrene.
- violin spider — brown recluse spider.
- volute spring — a coil spring, conical in shape, extending in the direction of the axis of the coil.
- walter piston — Walter, 1894–1976, U.S. composer.
- warping board — a rectangular board containing evenly spaced pegs at each end on which the warp is wound in preparation for weaving.
- watering spot — watering hole
- waterproofing — Chiefly British. a raincoat or other outer coat impervious to water.
- waterscorpion — any of several predaceous aquatic bugs of the family Nepidae, having clasping front legs and a long respiratory tube at the rear of the abdomen: capable of biting if handled.
- waygoing crop — away-going crop.
- whip scorpion — any of numerous arachnids of the order Uropygi, of tropical and warm temperate regions, resembling a scorpion but having an abdomen that ends in a slender, nonvenomous whip.
- wind scorpion — sun spider.
- winter sports — Winter sports are sports that take place on ice or snow, for example skating and skiing.
- word painting — an effective verbal description.
- word wrapping — In computing, word wrapping is a process by which a word which comes at the end of a line is automatically moved onto a new line in order to keep the text within the margins.
- working group — A working group is the same as a working party.
- working party — A working party is a committee which is formed to investigate a particular situation or problem and to produce a report containing its opinions and suggestions.
- workingperson — a workingman or workingwoman.
- xiphiplastron — the fourth lateral plate of a turtle's plastron
- zf expression — (programming) (After Zermelo Fränkel set theory). David Turner's name for list comprehension.
- zinjanthropus — the genus to which Australopithecus boisei was formerly assigned.
- zoosporangium — a sporangium or spore case in which zoospores are produced.
- zygosporangia — a sporangium that bears a zygospore.