18-letter words that end in al
- non-ecclesiastical — of or relating to the church or the clergy; churchly; clerical; not secular.
- nonconfrontational — Tending to deal with situations calmly and diplomatically; not aggressive or hostile.
- nonpharmacological — Not pharmacological.
- northern transvaal — province of South Africa, in the N part: 47,599 sq mi (123,280 sq km); pop. 5,202,000; cap. Pietersburg
- offensive material — any published or broadcast content (such as articles, photographs, films, or websites) that is likely to be upsetting, insulting, or objectionable to some or most people
- phantom withdrawal — the unauthorized removal of funds from a bank account using an automated teller machine
- postmaster general — the executive head of the postal system of a country.
- principal diagonal — a diagonal line or plane.
- pseudointellectual — a person exhibiting intellectual pretensions that have no basis in sound scholarship.
- psychopathological — the science or study of mental disorders.
- psychosociological — psychological and sociological
- quasi-metaphysical — pertaining to or of the nature of metaphysics.
- school for scandal — a comedy of manners (1777) by Richard Brinsley Sheridan.
- secondary diagonal — a diagonal line or plane.
- self-instructional — pertaining to or constituting learning materials and conditions arranged so that students can proceed to learn on their own with little or no supervision.
- semicircular canal — any of the three curved tubular canals in the labyrinth of the ear, associated with the sense of equilibrium.
- separate but equal — pertaining to a racial policy, formerly practiced in some parts of the United States, by which black people could be segregated if granted equal opportunities and facilities, as for education, transportation, or jobs.
- sociopsychological — of, relating to, or characterized by interrelated social and psychological factors.
- sociotechnological — of, relating to, or signifying the combination or interaction of social and technological factors.
- the grand national — an annual steeplechase run at Aintree, Liverpool, since 1839
- the lords temporal — (in Britain) peers other than bishops in their capacity as members of the House of Lords
- under (one's) seal — in a document authenticated by one's seal
- unix international — (body) (UI) A consortium including Sun, AT&T and others formed to promote an open environment based on Unix System V, including the Open Look windowing system.
- welland ship canal — a ship canal in S Canada, in Ontario, connecting Lakes Erie and Ontario: 8 locks. 25 miles (40 km) long.
- wrongful dismissal — the act of making someone redundant for reasons which are illegal or unjust