English Words: O
15,494 words · Page 3 of 310
A visa granted to temporary alien workers with exceptional abilities in science, education, business or athletics.
A visa granted to temporary alien workers with exceptional abilities in the movie or television industries.
In Proto-Indo-European linguistics, an ablaut form of a Proto-Indo-European root, characterised by the presence of the */o/ vowel phoneme in place of */e/.
A subject-based qualification superseded in England by GCSE, but still available internationally throughout the Commonwealth of Nations.
A random fortune on a strip of paper, available from Shinto shrines and Buddhist temples in Japan in exchange for a small offering.
A deciduous tree with distinctive deeply lobed leaves, acorns, and notably strong wood, typically of England and northeastern North America, included in genus Quercus.
A disease of uncertain origin affecting mature pedunculate oak (Quercus robur) and sessile oak (Quercus petraea) trees in Britain.
A fern of genus Gymnocarpium (syn. Thelypteris) which grows on trees, especially Gymnocarpium dryopteris.
Thaumetopoea processionea, a processionary native to oak forests across southern Europe, also occurring as an invasive species in northern Europe.
A member of the Hearts of Oak, a protest movement of farmers and weavers that arose in County Armagh, Ireland, in 1761, in reaction to excessive taxation.
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 3. 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.