4-letter words containing o, r
- odra — the Oder
- ogre — a monster in fairy tales and popular legend, usually represented as a hideous giant who feeds on human flesh.
- ohre — a river in central Europe, flowing NE from Germany through the W Czech Republic to the Elbe. 193 miles (310 km) long.
- oker — OK; all right.
- okra — a shrub, Abelmoschus esculentus, of the mallow family, bearing beaked pods.
- okri — Ben. born 1959, Nigerian writer; his books include the Booker-prizewinning The Famished Road (1991), Dangerous Love (1996), and In Arcadia (2002)
- omar — a male given name.
- omer — a Hebrew unit of dry measure, the tenth part of an ephah.
- omri — a king of Israel and the father of Ahab. I Kings 16:16–28.
- oner — being or amounting to a single unit or individual or entire thing, item, or object rather than two or more; a single: one woman; one nation; one piece of cake.
- onry — {{eye dialect of|from=Southern United States|ornery}}.
- oort — Jan Hendrick. 1900–92, Dutch astronomer, who confirmed (1927) and developed the theory of galactic rotation. He was the first to propose (1950) the existence of a mass of comets orbiting the sun far beyond the orbit of Pluto (the Oort cloud)
- oory — shabby; dingy.
- oper — (Internet) A network operator on IRC.
- opra — Occupational Pensions Regulatory Authority
- opry — (Appalachian) opera.
- orac — Oxygen Radical Absorbance Capacity: a measure of the ability of a substance, esp the blood, to absorb free radicals, used in determining the antioxidant effects of foods
- orad — toward the mouth or the oral region.
- orae — plural of os2 .
- oral — uttered by the mouth; spoken: oral testimony.
- oran — a seaport in NW Algeria.
- orbs — Encircle; enclose.
- orby — like or pertaining to an orb.
- orca — the killer whale, Orcinus orca.
- orch — orchestra
- orcs — Plural form of orc.
- orde — Alternative form of ord.
- ordo — Roman Catholic Church. a booklet containing short and abbreviated directions for the contents of the office and Mass of each day in the year.
- orel — a city in the W Russian Federation in Europe, on the left bank of the Oka River, S of Moscow.
- orem — a city in N Utah.
- oreo — a black person who is regarded as having adopted the attitudes, values, and behavior thought to be characteristic of middle-class white society, often at the expense of his or her own heritage.
- ores — a metal-bearing mineral or rock, or a native metal, that can be mined at a profit.
- orfe — A fish, the ide, Leuciscus idus.
- orff — Carl, 1895–1982, German composer, conductor, and music educator.
- orgy — wild or drunken festivity or revelry, especially involving sex with multiple participants.
- orle — Heraldry. a charge in the form of a narrow band following the form of the escutcheon within the edge, so that the extreme outer edge of the escutcheon is of the field tincture. an arrangement in orle of small charges: azure, an orle of bezants.
- orlo — a plinth supporting the base of a column.
- orly — a suburb SE of Paris, France: international airport.
- orne — a department in NW France. 2372 sq. mi. (6145 sq. km). Capital: Alençon.
- oro- — mountain
- orra — not regular or scheduled; odd: orra work.
- orse — (legal, British) otherwise.
- orsk — a city in the S Russian Federation in Europe, on the Ural River.
- orts — Usually, orts. a scrap or morsel of food left at a meal.
- oryx — a large African antelope, Oryx gazella, grayish with black markings and having long, nearly straight horns: an endangered species.
- orzo — pasta in the form of small ricelike grains.
- osar — plural of os3 .
- ourn — (obsolete, outside, British, and, American dialects, especially, Appalachian) Ours.
- ours — (used to denote the narrator of a literary work written in the first person singular).
- over — above in place or position: the roof over one's head.