English Words: O

15,494 words · Page 7 of 310

Obamnaname

Nickname for Barack Obama (born 1961), president of the United States from 2009 to 2017.

Obamunismname

The economic or political policies of the Obama administration, viewed as socialism, communism, or government overreach.

Obamunistnoun

A supporter of US president Barack Obama.

Obanname

A town in Argyll and Bute council area, Scotland (OS grid ref NM8530).

Obandoname

A municipality of Bulacan, Philippines.

obangnoun

An old Japanese gold coin.

Obaraname

A surname.

obasannoun

A Japanese middle-aged woman.

obashipnoun

The role or status of an oba.

obatoclaxnoun

An experimental drug candidate for the treatment of various cancers.

Obatzdanoun

a Bavarian cheese delicacy. It is prepared by mixing one third aged camembert, one third aged Romadur cheese (60%) and one third butter, and seasoning with onions and spices.

OBBBname

Initialism of One Big Beautiful Bill.

obbligatonoun

An obbligato section; a prominent countermelody, often written to be played or sung above the principal theme (in a higher pitch range).

obbonoun

police observation

Obbrusselname

A municipality of Brussels, Belgium

obbynoun

An obstacle course.

obcellnoun

A hypothetical proto-organism consisting of a cup-shaped half-cell.

obclavateadj

Inversely clavate; thicker at the base.

obcompressedadj

Compressed or flattened anteroposteriorly, or in a way opposite to the usual one.

obconicadj

of a fruit, conical in shape and attached to the stalk by the pointed end.

obconicaladj

Alternative form of obconic.

obcordateadj

Of a reversed cordate shape; heart-shaped but attached to the stalk by the pointed end.

obcordatelyadv

In an obcordate form.

obcordiformadj

Inversely cordiform; obcordate.

obdeltateadj

In the shape of an equilateral triangle with the apex at the base.

obdeltoidadj

Triangular and attached to the stem via a tip.

obdiplostemonousadj

Having two sets of stamens in alternating whorls, with the outer whorl opposite the petals.

obdormitionnoun

The sensation of numbness that occurs in a limb when it falls asleep due to pressure on a nerve.

obdtadj

Abbreviation of obedient, at one time used in correspondence.

obduceverb

To cover.

obductverb

To draw over; to cover.

obductionnoun

The act of drawing or laying over, as a covering.

obduracynoun

The state of being obdurate, intractable, or stubbornly inflexible.

obdurancenoun

hardness; stubbornness

obdurantlyadv

In an obdurant manner.

obdurateadj

Stubbornly persistent, generally in wrongdoing; refusing to reform or repent.

obduratelyadv

In an obdurate manner; stubbornly, intractably or inflexibly.

obduratenessnoun

The characteristic of being obdurate; stubbornness.

obdurationnoun

A hardening of the heart; hardness of heart.

obdureadj

Synonym of obdurate.

obduredverb

simple past and past participle of obdure

obdurednessnoun

hardness

OBEnoun

Initialism of Officer of the Order of the British Empire.

obe atanoun

A stew or mother sauce in Yoruba cuisine, made from tomatoes, peppers, onions, oil, and spices.

obeahnoun

A form of folk magic, medicine or witchcraft originating in Africa and practised in parts of the Caribbean.

obeahismnoun

Alternative form of obiism.

obeahmannoun

A male practitioner of obeah.

obeastnoun

A very obese or overweight person.

Obecalpname

Any medicine that is a placebo.

obechenoun

Triplochiton scleroxylon, a tropical tree of Africa.

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 7. 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.