12-letter words containing o, u, a, n
- heteroousian — a person who believes the Father and the Son to be unlike in substance or essence; an Arian (opposed to Homoousian).
- hippocentaur — Centaur.
- hohenstaufen — a member of the royal family that ruled in Germany from 1138 to 1208 and from 1215 to 1254, and in Sicily from 1194 to 1266.
- hoisin sauce — a thick, sweet, spicy condiment containing soybeans, sugar, garlic, and chili peppers, used in cooking or as an accompaniment to meat, fish, or poultry, especially Peking duck.
- holothurians — Plural form of holothurian.
- homodynamous — (biology) Pertaining to, or involving, homodynamy.
- homologumena — the books in the New Testament generally held as authoritative and canonical by the early church.
- horse around — a large, solid-hoofed, herbivorous quadruped, Equus caballus, domesticated since prehistoric times, bred in a number of varieties, and used for carrying or pulling loads, for riding, and for racing.
- horse manure — horse's excrement
- house martin — a small European swallow, Delichon urbica, that builds its nest under the eaves of houses.
- housecleaner — Someone employed to clean a house.
- househusband — a man whose spouse works and who stays home to manage their household.
- housepainter — A professional painter of houses.
- housetrained — Simple past tense and past participle of housetrain.
- housewarming — a party to celebrate a person's or family's move to a new home.
- hua guo feng — 1921–2008, Chinese Communist statesman; prime minister of China 1976–80
- huffman code — Huffman coding
- human comedy — French La Comédie Humaine. a collected edition of tales and novels in 17 volumes (1842–48) by Honoré de Balzac.
- human genome — genetic code of human beings
- humanisation — Alternative form of humanization.
- humanization — to make humane, kind, or gentle.
- humification — the formation of humus.
- humiliations — Plural form of humiliation.
- hydronautics — (nautical) The science of the design and construction of ships, their engines, and their instrumentation.
- hypognathous — having the lower jaw or mandible longer than the upper.
- ibizan hound — one of a breed of medium-sized, tall, swift hunting hounds with a short, usually red and white coat, bred originally by the Pharaohs of ancient Egypt but today found chiefly in the Balearic Islands and other areas of Spain.
- ichthyofauna — the indigenous fish of a region.
- illaqueation — the act of ensnaring
- illumination — an act or instance of illuminating.
- illuminators — Plural form of illuminator.
- illuminatory — Increasing informative qualities; explanatory.
- illusionable — Liable to illusion.
- illustration — something that illustrates, as a picture in a book or magazine.
- immunisation — (British, immunology) alternative spelling of immunization.
- immunization — the fact or process of becoming immune, as against a disease.
- in favour of — If one thing is rejected in favour of another, the second thing is done or chosen instead of the first.
- in statu quo — in the state in which (anything was or is).
- in your face — involving confrontation; defiant; provocative.
- in-and-outer — a person who is by turns in and out of a particular situation, condition, venture, investment, etc.
- in-your-face — involving confrontation; defiant; provocative.
- inaniloquent — Tending to speak inanely; loquacious; garrulous.
- inauguration — an act or ceremony of inaugurating.
- inauguratory — Inaugural; being the first instance.
- inauspicious — not auspicious; boding ill; ill-omened; unfavorable.
- incautiously — In an incautious manner; with a lack of caution.
- inclusionary — (of zoning, housing programs, etc.) stipulating that a certain percentage of new housing will be priced within the reach of middle-income buyers or renters.
- incoagulable — of a nature that cannot be coagulated
- incommutable — not exchangeable.
- incommutably — In an incommutable manner.
- incomputable — incapable of being computed; incalculable.