12-letter words containing o, i, r, e, a
- heterotactic — of, relating to, or characterized by heterotaxis.
- heterotopias — Plural form of heterotopia.
- hexachloride — a chloride containing six atoms of chlorine.
- hexafluoride — a fluoride containing six atoms of fluorine.
- hexobarbital — a barbiturate with hypnotic and sedative properties
- hibernations — Plural form of hibernation.
- hide or hair — the pelt or skin of one of the larger animals (cow, horse, buffalo, etc.), raw or dressed.
- hierocracies — Plural form of hierocracy.
- hierogrammat — a writer of hierograms.
- hierographer — a writer of hierographs
- hierographic — of or relating to hierographs
- hierophanies — Plural form of hierophany.
- hierophantic — (in ancient Greece) an official expounder of rites of worship and sacrifice.
- high treason — treason against the sovereign or state.
- hippocentaur — Centaur.
- hippocrepian — (of an aquatic organism or plant) shaped like a horseshoe
- hire company — a company that hires things out to people
- hit the road — a long, narrow stretch with a smoothed or paved surface, made for traveling by motor vehicle, carriage, etc., between two or more points; street or highway.
- holidaymaker — vacationer.
- horatian ode — an ode consisting of several stanzas all of the same form.
- horometrical — Relating to horometry.
- horse marine — (formerly) a marine mounted on horseback or a cavalryman doing duty on shipboard.
- horse racing — a contest of speed among horses that either are ridden by jockeys or pull sulkies and their drivers.
- horse trials — a competitive sporting event at which riders have to show their skill in dressage, show-jumping, and cross-country
- horse's tail — burro's tail.
- horsemanship — the art, ability, skill, or manner of a horseman.
- house martin — a small European swallow, Delichon urbica, that builds its nest under the eaves of houses.
- house wizard — (Probably from ad-agency tradetalk, "house freak") A hacker occupying a technical-specialist, R&D, or systems position at a commercial shop. A really effective house wizard can have influence out of all proportion to his/her ostensible rank and still not have to wear a suit. Used especially of Unix wizards. The term "house guru" is equivalent.
- 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.
- hovering act — an act forbidding or restricting the loitering of foreign or domestic vessels within the prescribed limits of a coastal nation.
- hydroelastic — undergoing a change in elasticity as a result of the flow of water or another fluid
- hyper-social — relating to, devoted to, or characterized by friendly companionship or relations: a social club.
- hyperbolical — having the nature of hyperbole; exaggerated.
- hyperchaotic — Of or pertaining to hyperchaos.
- hyperlogical — reasoning in accordance with the principles of logic, as a person or the mind: logical thinking.
- hypersomniac — a tendency to sleep excessively.
- hypervolemia — (medicine) An abnormal increase in the volume of blood circulating through the body.
- hypoallergic — Hypoallergenic.
- hyponatremia — (medicine) An abnormally low concentration of sodium (or salt) in blood plasma.
- hysteromania — unusually increased sexual desire in a woman
- iambographer — a person who writes iambs
- iatrochemist — a person who practises iatrochemistry
- iatrogenesis — (medicine) Any adverse effect (or complication) resulting from medical treatment.
- ibota privet — a Japanese spreading shrub, Ligustrum obtusifolium, of the olive family, having hairy leaves and nodding white flower clusters.
- icosahedrons — Plural form of icosahedron.
- ignorantness — The state or quality of being ignorant; ignorance.
- il trovatore — an opera (1853) by Giuseppe Verdi.
- ill-assorted — badly matched; incompatible