12-letter words containing a, r, i, n
- aldermanlike — resembling an alderman, esp in being pompous
- alexander ii — 1198–1249, king of Scotland (1214–49), son of William (the Lion)
- alexander iv — (Rinaldo Conti) died 1261, Italian ecclesiastic: pope 1254–61.
- alexander vi — original name Rodrigo Borgia. 1431–1503, pope (1492–1503): noted for his extravagance and immorality as well as for his patronage of the arts; father of Cesare and Lucrezia Borgia, with whom he is said to have committed incest
- alexandrines — Plural form of alexandrine.
- alexandrinus — the Greek uncial codex, dating from the early 5th century a.d., originally containing the complete text of the Greek Old and New Testaments.
- alice's fern — Hartford fern.
- alieni juris — under the control of another, as a lunatic or infant.
- alkaptonuria — excessive excretion of homogentisic acid in the urine, caused by a hereditary abnormality of the metabolism of tyrosine and phenylalanine.
- all-american — If you describe someone as an all-American boy or girl, you mean that they seem to have all the typical qualities that are valued by ordinary Americans, such as good looks and love of their country.
- allegorizing — Present participle of allegorize.
- alliteration — Alliteration is the use in speech or writing of several words close together which all begin with the same letter or sound.
- alluringness — The state or quality of being alluring.
- alphanumeric — (of a character set, code, or file of data) consisting of alphabetical and numerical symbols
- altercations — Plural form of altercation.
- alternations — Plural form of alternation.
- alternatives — a choice limited to one of two or more possibilities, as of things, propositions, or courses of action, the selection of which precludes any other possibility: You have the alternative of riding or walking.
- amazon river — a river in N South America, flowing E from the Peruvian Andes through N Brazil to the Atlantic Ocean: the largest river in the world in volume of water carried. 3900 miles (6280 km) long.
- ambartsumian — Viktor A(mazaspovich). 1908–96, Armenian astrophysicist, renowned for his description of radio sources as explosions in the core of galaxies
- ambisinister — clumsy or unskillful with both hands.
- ameliorating — Present participle of ameliorate.
- amelioration — the act or an instance of ameliorating or the state of being ameliorated
- amenorrhoeic — absence of the menses.
- amentiferous — bearing aments
- american elk — elk (def 2).
- american elm — an elm, Ulmus americana, of North America, cultivated for shade and ornament: state tree of Massachusetts, Nebraska, and North Dakota.
- american ivy — a vitaceous woody vine, Parthenocissus quinquefolia, of North America, having tendrils with adhesive tips, bluish-black berry-like fruits, and compound leaves that turn red in autumn: widely planted for ornament
- american rig — a rig for drilling oil and gas wells by using a chisel bit dropped from a considerable height.
- americanisms — a custom, trait, belief, etc., peculiar to the United States of America or its citizens.
- americanized — If someone is Americanized, they do things in a way that is typical of the United States.
- americanness — of or relating to the United States of America or its inhabitants: an American citizen.
- amethopterin — (now rare) Methotrexate.
- aminobutyric — (organic chemistry) Of or pertaining to any of several isomeric univalent radicals in which a hydrogen atom of a butyric radical is replaced by an amino group.
- amortisation — Alternative spelling of amortization.
- amortization — the process of amortizing a debt
- amortizement — a sloping top on a buttress, pillar, etc.
- amphiregulin — (protein) A particular autocrine growth factor.
- amphotericin — an amphoteric antibiotic produced by the bacterium Streptomyces nodosus and used in the treatment of fungal infections.
- amyl nitrite — a yellowish unstable volatile fragrant liquid used in medicine as a vasodilator and in perfumes. Formula: (CH3)2CHCH2CH2NO2
- an iron fist — a cruel and unyielding attitude or approach
- anacatharsis — severe vomiting
- anacathartic — causing anacatharsis
- anachronical — Not in the correct date order. Chronologically incorrect.
- anachronisms — Plural form of anachronism.
- anachronists — Plural form of anachronist.
- anaerobiosis — life in the absence of oxygen
- anaerobiotic — anaerobic
- anagrammatic — a word, phrase, or sentence formed from another by rearranging its letters: “Angel” is an anagram of “glean.”.
- anamorphosis — an image or drawing distorted in such a way that it becomes recognizable only when viewed in a specified manner or through a special device
- anaphrodisia — diminished sexual desire.