12-letter words containing m, r, s, a
- horse marine — (formerly) a marine mounted on horseback or a cavalryman doing duty on shipboard.
- 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.
- housemasters — Plural form of housemaster.
- housewarming — a party to celebrate a person's or family's move to a new home.
- human rights — basic civil freedoms
- human safari — an organized tour that takes tourists to unfamiliar places where they can observe the lifestyle of indigenous or other local people: human safaris to remote tribal communities; a human safari through the slums of Mumbai.
- hydrargyrism — mercurialism.
- hydromedusae — Irregular plural form of hydromedusa.
- hypermarkets — Plural form of hypermarket.
- hyperosmolar — Of, pertaining to, or as a result of hyperosmolarity.
- hyperrealism — interest in or concern for the actual or real, as distinguished from the abstract, speculative, etc.
- hypersarcoma — a growth of proud or fungous flesh
- hypersomniac — a tendency to sleep excessively.
- hypogastrium — the lower and median part of the abdomen.
- hysteromania — unusually increased sexual desire in a woman
- iatrochemist — a person who practises iatrochemistry
- icbm address — (networking, humour) (Or "missile address") The form used to register a site with the Usenet mapping project includes a space for longitude and latitude, preferably to seconds-of-arc accuracy. This is actually used for generating geographically-correct maps of Usenet links on a plotter; however, it has become traditional to refer to this as one's "ICBM address" or "missile address", and many people include it in their sig block with that name. (A real missile address would include target altitude.)
- idea hamster — a person who is employed as a source of new ideas
- illiberalism — narrowminded; bigoted.
- illuminators — Plural form of illuminator.
- immatureness — not mature, ripe, developed, perfected, etc.
- immaturities — Plural form of immaturity.
- immeasurable — incapable of being measured; limitless: the immeasurable vastness of the universe.
- immeasurably — incapable of being measured; limitless: the immeasurable vastness of the universe.
- immensurable — immeasurable.
- immigrations — Plural form of immigration.
- immiseration — to make miserable.
- immoralistic — (somewhat, rare) Of or relating to immoralism.
- immoralities — Plural form of immorality.
- immortalised — to bestow unending fame upon; perpetuate.
- immortalizes — Third-person singular simple present indicative form of immortalize.
- imparadising — Present participle of imparadise.
- impartialist — Someone who is or pretends to be impartial.
- imperforates — Plural form of imperforate.
- imperialised — Simple past tense and past participle of imperialise.
- imperialists — Plural form of imperialist.
- imperishable — not subject to decay; indestructible; enduring.
- imperishably — In an imperishable manner.
- impersonally — In an impersonal manner.
- impersonated — to assume the character or appearance of; pretend to be: He was arrested for impersonating a police officer.
- impersonates — Third-person singular simple present indicative form of impersonate.
- impersonator — a person who pretends to be another.
- implicatures — Plural form of implicature.
- importancies — Plural form of importancy.
- importations — Plural form of importation.
- imprecations — Plural form of imprecation.
- impressional — a strong effect produced on the intellect, feelings, conscience, etc.
- imprisonable — capable of being imprisoned or incarcerated
- improvisator — a person who improvises; improviser.