English Words: O
15,494 words · Page 65 of 310
An antipsychotic drug C₁₇H₂₀H₄S administered orally especially in the short-term treatment of schizophrenia and acute manic episodes of bipolar disorder.
The observation that the night sky is mostly dark, yet, in a boundless universe of stars, every line of sight from the eye must eventually intercept the surface of a star.
Of an object, concept, relationship, etc., having existed for a relatively long period of time.
The latter part of life, when one is an older adult; especially, the years from age 65 onward.
A village in Old Basing and Lychpit parish, Basingstoke and Deane district, Hampshire, England, to the east of Basingstoke (OS grid ref SU6652).
Any of those who separated from the official Russian Orthodox Church after 1666 as a protest against the church reforms introduced by Patriarch Nikon between 1652 and 1666. They continue liturgical and ritual practices which predate the reforms.
An archaeological culture associated with a distinctive, elaborate circle-and-dot aesthetic style and centered on the Bering Strait region.
A presumed unacknowledged system of association between childhood friends (especially those at school or university together), used for mutual assistance or favouritism.
A linguistic ancestor of the Chinese languages, spoken during roughly the first millennium BCE.
A vigorous, committed attempt or effort, often in the context of a nearly hopeless situation where failure is expected.
A suburban area and community in Conwy borough county borough, Wales (OS grid ref SH8778).
A village in Broughton and Old Dalby parish, Melton district, Leicestershire, England (OS grid ref SK6723).
Old East Norse dialect (also sometimes considered a separate language, several other names are used as well) as spoken from the 9th to 11th centuries in Denmark
Official nickname for Virginia: a state of the United States; originally the nickname given by Charles II of England to the Colony of Virginia.
A branch of Old Low Franconian, with a Frisian substrate, spoken and written during the Middle Ages (c. 9th to 12th century) in the Netherlands and the northern part of present-day Belgium, as well as in areas of northern France along the North Sea coast and adjoining Belgium. This language represents the first attested stage of the Dutch language and its dialects, being succeeded by Middle Dutch in the later Middle Ages.
The variety of Old Low Franconian that was spoken in Limburg and the Rhineland
The ancestor language of Modern English, also called Anglo-Saxon, spoken in most of Britain from about 400 to 1100.
Spelling & Dictionary Insight
The English alphabetical index for the letter O contains 15,494 headwords drawn from our Wiktionary-derived dictionary table. At 50 entries per page the browse splits into 310 pages, and you are currently viewing page 65. Every row above is a dictionary-backed entry with a canonical slug, and each links through to a full definition page with pronunciation, senses, etymology, and related-word data where available.
On this page 50 of 50 entries carry a part-of-speech tag and 50 carry at least one stored definition. Coverage varies across letters because Wiktionary volunteers build entries at different speeds for different parts of the alphabet, letters with common starting sounds (S, C, T, P) usually have the densest coverage, while less frequent starters (X, Q, Z) tend to have shorter but more specialised lists. PlainSpell surfaces whatever data is present and links back to the source when a definition is not yet recorded.
For readers using this index as a spelling reference, the guarantee is that every form you see on the list is a documented English headword, not a guess, not a derived inflection lacking a lemma row. If a word you expected to find is absent from the "O" list, it usually means the form exists only as an inflection of another lemma (e.g. a past participle stored under the infinitive) or the entry has not yet been imported from Wiktionary. Use the search bar or the misspelling lookup to resolve these cases.