12-letter words containing a, s, m, e, r
- half measure — If someone refers to policies or actions as half measures, they are critical of them because they think that they are not forceful enough and are therefore of little value.
- harbormaster — A harbormaster is the official in charge of a harbor.
- harmlessness — The characteristic of being harmless; the absence of harm.
- harvest home — the bringing home of the harvest.
- harvest mite — chigger (def 1).
- harvest moon — the moon at and about the period of fullness that is nearest to the autumnal equinox.
- harvest time — season when crops are gathered
- headforemost — headfirst (def 1).
- headmasterly — In a manner befitting a headmaster.
- headmistress — a woman in charge of a private school.
- heimskringla — a book of the 13th century narrating the history of the kings of Norway by Snorri Sturluson.
- hellgramites — Plural form of hellgramite.
- hemapheresis — apheresis.
- hemarthrosis — (pathology) bleeding in the joints.
- hemerocallis — the genus comprising the day lilies.
- hemihydrates — Plural form of hemihydrate.
- hemiparasite — A plant that obtains or may obtain part of its food by parasitism, e.g., mistletoe, which also photosynthesizes.
- heterogamous — Genetics. having unlike gametes, or reproducing by the union of such gametes (opposed to isogamous).
- hiram revels — Hiram Rhoades [rohdz] /roʊdz/ (Show IPA), 1822–1901, U.S. clergyman, educator, and politician: first black senator 1870–71.
- home address — the address of one's house or flat
- homesteaders — Plural form of homesteader.
- horse manure — horse's excrement
- 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.
- 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.
- 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.
- 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.
- immiseration — to make miserable.
- immoralities — Plural form of immorality.
- immortalised — to bestow unending fame upon; perpetuate.
- immortalizes — Third-person singular simple present indicative form of immortalize.
- imperforates — Plural form of imperforate.
- imperialised — Simple past tense and past participle of imperialise.
- imperialists — Plural form of imperialist.