English Words: O
15,494 words · Page 190 of 310
Any of many small crustaceans, of the class Ostracoda, that resemble a shrimp enclosed in a bivalve shell.
A piece of pottery or stone, usually broken off from a vase or other earthenware vessel, especially one used to cast a vote during the Ancient Greek process of ostracism.
A group of countries run by governments or leaders that have taken the stance of denying the significance and downplaying the effects of the COVID-19 crisis.
An instruction to jurors telling them they may equate willful ignorance with actual knowledge.
The tendency to ignore obvious problems and pretend they do not exist; ostrichism.
A policy of keeping one's head in the sand, denying the reality of a problem or threat.
To engage in ostrichism; to bury one's head in the sand; to deliberately ignore problems.
Any member of an ancient East Germanic tribe, one branch of the Goths (the Visigoths being the other), which invaded Italy in the sixth century.
A kingdom (493—553 CE), founded by Theodoric the Great, corresponding to present-day Italy (including Sicily but not Sardinia) and neighbouring areas.
Either of two related numeration systems based on continued fractions: a non-standard positional numeral system for integers, and a non-integer representation of real numbers.
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 190. 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.