15-letter words containing a, t, p, o
- two-star petrol — leaded petrol that has a low octane number; inferior leaded petrol
- typographically — of or relating to typography.
- ultra-patriotic — of, like, suitable for, or characteristic of a patriot.
- ultramicroscope — an instrument that uses scattering phenomena to detect the position of objects too small to be seen by an ordinary microscope.
- ultramicroscopy — the use of the ultramicroscope.
- ultrasonography — a diagnostic imaging technique utilizing reflected high-frequency sound waves to delineate, measure, or examine internal body structures or organs.
- unapostolically — in an unapostalic manner
- unary operation — an operation in a mathematical system by which one element is used to yield a single result, as squaring or taking the square root.
- uncompassionate — having or showing compassion: a compassionate person; a compassionate letter.
- uncomplaisantly — in an uncomplaisant manner
- uncomplementary — forming a complement; completing.
- uncomplimentary — of the nature of, conveying, or expressing a compliment, often one that is politely flattering: a complimentary remark.
- uncooperatively — in an uncooperative or unhelpful manner
- uncopyrightable — not able to be copyrighted
- undercompensate — to compensate or pay less than is fair, customary, or expected.
- underpopulation — having a population lower than is normal or desirable.
- undisappointing — not disappointing
- unexceptionable — not offering any basis for exception or objection; beyond criticism: an unexceptionable record of achievement.
- unleaded petrol — petrol containing a reduced amount of tetraethyl lead
- unpatriotically — in a manner that is not enthusiastically supporting one's country and its ways of life
- unproportionate — proportioned; being in due proportion; proportional.
- 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.
- up to your ears — If you are up to your ears in something, it is taking up all of your time, attention, or resources.
- upper arlington — a city in central Ohio, near Columbus.
- 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.
- 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.
- 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.
- vanishing point — a point of disappearance, cessation, or extinction: His patience had reached the vanishing point.
- vicar apostolic — Roman Catholic Church. a titular bishop serving either in a district where no episcopal see has been established, or in one where the succession of bishops has been interrupted.
- washington palm — a palm tree, Washingtonia filifera, of California and Florida, having large fan-shaped leaves and small black fruits
- water pennywort — any of numerous perennial herbs of the genus Hydrocotyle, of the parsley family, having rounded leaves and living in water or marshy places.
- water pollution — the pollution of the sea and rivers
- weatherproofing — Present participle of weatherproof.
- west hartlepool — a former borough, now part of Hartlepool, in Cleveland County, in NE England, at the mouth of the Tees.
- whip into shape — to bring by vigorous action into the proper or desired condition
- wind-pollinated — being pollinated by airborne pollen.
- windfall profit — a profit that arises thanks to an external event over which the person profiting had no control
- working capital — the amount of capital needed to carry on a business.
- xenotransplants — Plural form of xenotransplant.
- xylotypographic — involving or pertaining to xylotypography
- you can keep it — I have no interest in what you are offering
- z-zero particle — one of three particles, called intermediate vector bosons, that are believed to transmit the weak force. Symbol: Z 0.
- zoophytological — of or relating to zoophytology