English Words: O
15,494 words · Page 108 of 310
A type of cloth diaper which can be adjusted and lengthened to match the baby's growth, thus allowing the diaper to be worn from around birth (by a newborn) to potty-training age.
Of a garment, designed to be worn with comfort by people with a wide range of sizes.
Describing a service operation at which all of a customer's needs may be satisfied without visiting another.
A single place, institution, service, website, technology, etc., that provides everything necessary.
Any mountain on Earth that extends more than 1,000 metres (3,281 ft) but less than 2,000 metres (6,562 ft) above sea level.
To eat quickly and with minimal chewing, especially if to the point of swallowing food whole.
A form of encryption where each bit or character from the plaintext is encrypted by a modular addition with a bit or character from a secret random key (or pad) of the same length as the plaintext.
Having the property that the same argument may yield multiple values, but different arguments never yield the same value.
Being or relating to a kind of exotic option that pays out if an asset reaches or passes a certain price at any point during the relevant period.
That said to be possessed by someone who is obsessed with something or only able to think of one thing.
A mirror reflecting images on one side and transparent on the other, often used by the police during interrogations.
Something that results in failure or obscurity, with no chance at redemption; a dead end.
Describing a service operation at which all of a customer's needs may be satisfied by a single server, without waiting in a second queue.
The ideology that all of the countries of the world are essentially similar and could interoperate without conflict.
A ghost town in Lincoln County, Oregon, United States, situated on the northeastern part of the Yaquina River.
A casual festive gathering on Friday night after the first Shabbat meal, usually involving food, singing, dancing, and casual Torah study, fulfilling the mitzvah of enjoying Shabbat.
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 108. 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.