4-letter words starting with a
- amur — a river in NE Asia, rising in N Mongolia as the Argun and flowing southeast, then northeast to the Sea of Okhotsk: forms the boundary between Manchuria and Russia. Length: about 4350 km (2700 miles)
- amyl — of, consisting of, or containing any of eight isomeric forms of the monovalent group C5H11-
- ana- — up; upwards
- anal — Anal means relating to the anus of a person or animal.
- anam — a former kingdom and French protectorate along the E coast of French Indochina: now part of Vietnam.
- anan — what did you say?
- anas — a collection of miscellaneous information about a particular subject, person, place, or thing.
- anax — one of the Gigantes and father of Asterius.
- anba — father: a title of a clergyman or saint in the Coptic Church.
- ance — (chiefly, Scotland) alternative spelling of once.
- ancp — (language) An early system on the Datatron 200 series.
- ande — Alternative form of onde.
- andf — Architecture Neutral Distribution Format
- andy — a male given name, form of Andrew.
- anes — once.
- anet — The herb dill, or dillseed.
- anew — If you do something anew, you do it again, often in a different way from before.
- anga — one of the two parts, or tetrachords, of the octave in Indian music
- anie — Obsolete spelling of any.
- anik — one of a series of Canadian geosynchronous communications satellites that provide telephone and television transmissions.
- anil — a leguminous West Indian shrub, Indigofera suffruticosa: a source of indigo
- anis — a French or Spanish liqueur flavored with aniseed
- ankh — a tau cross with a loop on the top, symbolizing eternal life: often appearing in Egyptian personal names, such as Tutankhamen
- anna — a former Indian copper coin, worth one sixteenth of a rupee
- anne — Princess, the Princess Royal. born 1950, daughter of Elizabeth II of Great Britain and Northern Ireland; a noted horsewoman and president of the Save the Children Fund
- anno — in the year
- anny — Eye dialect of any.
- anoa — the smallest of the cattle tribe Anoa depressicornis, having small straight horns and inhabiting the island of Celebes in Indonesia
- anon — Anon means quite soon.
- anow — enough
- anpr — Automatic Number Plate Recognition: a surveillance technology which uses optical character recognition on camera images to read a vehicle's numberplate
- ansa — the apparent extremities of planetary rings, esp those of Saturn, when viewed from such a perspective that they look like handles
- ansi — American National Standards Institution
- ant- — anti-
- anta — a pilaster attached to the end of a side wall or sometimes to the side of a doorway
- ante — the gaming stake put up before the deal in poker by the players
- anti — You can refer to people who are opposed to a particular activity or idea as antis.
- ants — any of numerous black, red, brown, or yellow social insects of the family Formicidae, of worldwide distribution especially in warm climates, having a large head with inner jaws for chewing and outer jaws for carrying and digging, and living in highly organized colonies containing wingless female workers, a winged queen, and, during breeding seasons, winged males, some species being noted for engaging in warfare, slavemaking, or the cultivation of food sources.
- antu — an odorless gray powder, C10H7NHCSNH2, used to kill rats
- anty — Covered with ants.
- anus — A person's anus is the hole from which faeces leaves their body.
- anza — Juan Bautista de [hwahn bou-tees-tah th e] /ʰwɑn baʊˈtis tɑ ðɛ/ (Show IPA), 1735–88, Spanish frontiersman and army officer, born in Mexico: explored western coast of U.S.
- aocb — any other competent business
- aoce — Apple Open Collaboration Environment
- aoki — Shuzo [shoo-zaw] /ˈʃu zɔ/ (Show IPA), 1844–1914, first Japanese ambassador to U.S., 1905–09.
- aole — no; not at all.
- aonb — Area of Outstanding Natural Beauty: an area designated by the appropriate government bodies as requiring protection to conserve and enhance its natural beauty
- aone — noting a vessel regarded by a shipping-classification society as being equipped to the highest standard and with equipment maintained in first-class condition.
- apal — Array Processor Assembly Language
- apar — The three-banded armadillo, Tolypeutes matacus.