15-letter words containing s, h, i, l, o
- summer holidays — the time when children do not go to school in the summer
- sycophantically — a self-seeking, servile flatterer; fawning parasite.
- synecdochically — a figure of speech in which a part is used for the whole or the whole for a part, the special for the general or the general for the special, as in ten sail for ten ships or a Croesus for a rich man.
- thalassographic — relating to thalassography
- the anglo-irish — the inhabitants of Ireland of English birth or descent
- the cordilleras — the complex of mountain ranges on the W side of the Americas, extending from Alaska to Cape Horn and including the Andes and the Rocky Mountains
- the devil's own — a very difficult or problematic (thing)
- the lost tribes — the ten tribes deported from the N kingdom of Israel in 721 bc and believed never to have returned to Palestine
- the pleistocene — the Pleistocene epoch or rock series
- thorndike's law — the principle that all learnt behaviour is regulated by rewards and punishments, proposed by Edward Lee Thorndike (1874–1949), US psychologist
- thousand island — of or relating to the Thousand Islands or their inhabitants
- threshold price — the highest price a retailer is allowed to sell a particular good at
- thromboembolism — the blockage of a blood vessel by a thrombus carried through the bloodstream from its site of formation.
- training school — a school that provides training in some art, profession, or vocation.
- transhistorical — occurring throughout all human history
- troubleshooting — to act or be employed as a troubleshooter: She troubleshoots for a large industrial firm.
- 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.
- tyrwhitt-wilson — Gerald Hugh, 14th Baron Berners [bur-nerz] /ˈbɜr nərz/ (Show IPA), 1883–1950, English composer, painter, and author.
- unphilosophical — not adhering to philosophical theory or principles
- unpolished rice — a partly refined rice, hulled and deprived of its germ but retaining some bran.
- untrustworthily — in an untrustworthy manner; not trustworthily
- venetian school — any of various groups of artists identified with Venice throughout the history of Italian art but most notably the painters of the 18th century, as Giovanni Battista Tiepolo, Francesco Guardi, and Antonio Canaletto.
- visible horizon — horizon (def 1).
- washing-up bowl — plastic bowl used for washing dishes
- washington lily — a lily, Lilium washingtonianum, of the western coast of the U.S., having whorled leaves and fragrant, purple-spotted white flowers.
- washington palm — a palm tree, Washingtonia filifera, of California and Florida, having large fan-shaped leaves and small black fruits
- whaling station — a place where the carcases of whales were processed
- where one lives — in one's sensitive or defenceless position
- whistle-blowing — a person who informs on another or makes public disclosure of corruption or wrongdoing.
- white corpuscle — white blood cell.
- wilson's thrush — veery.
- winter holidays — a period of rest from work or studies taken in winter
- yellow goatfish — a schooling goatfish, Mulloidichthys martinicus, inhabiting the Atlantic Ocean from Florida to Panama.
- yin-yang school — a school of ancient Chinese philosophers who interpreted history in terms of the influence of the seasons and of five elements: earth, wood, metal, fire, and water.
- yorkshire dales — the valleys of the rivers flowing from the Pennines in W Yorkshire: chiefly Ribblesdale, Swaledale, Nidderdale, Wharfedale, and Wensleydale; tourist area
- zoophysiologist — an expert in zoophysiology