English Words: U

23,789 words · Page 14 of 476

ultra-processedadj

Very heavily processed.

ultra-processed foodnoun

Any processed food characterized by relatively involved methods of industrial production, often with artificial additives such as colorings and preservatives. (Often vaguely defined but usually agreed to be food that is made in a factory and that home cooks would not know how to make and would not even be equipped to make.)

ultra-progressiveadj

Alternative spelling of ultraprogressive.

ultra-prominentadj

Having a topographic prominence of 1,500 metres or more.

ultra-richadj

Alternative spelling of ultrarich.

ultra-wealthyadj

Alternative spelling of ultrawealthy.

ultrabasicadj

ultramafic

ultrabenevolentadj

extremely benevolent

ultrabithoraxnoun

A particular homeobox protein and associated gene.

ultrablondadj

Very strikingly blond.

ultraboldadj

Bolder than a typical bold typeface.

ultrabooknoun

A very lightweight and thin portable computer the areal size of a notebook computer or subnotebook.

ultrabrachycephalicadj

Highly brachycephalic, beyond hyperbrachycephaly.

ultrabrachycephalynoun

brachycephaly to an even more extreme degree than hyperbrachycephaly

ultrabraveadj

Exceptionally brave.

ultrabreathableadj

Extremely breathable.

ultrabrightadj

Very bright.

ultrabrilliantadj

extremely brilliant

ultrabroadadj

Extremely broad.

ultrabroadbandadj

Relating to or carrying a very wide band of frequencies

ultrabuffadj

Extremely buff (fit, muscular).

ultrabulletnoun

Chess played at an extremely fast time control, with each side getting 15 seconds total to make all their moves.

ultrabullet chessnoun

Alternative form of ultrabullet.

ultracainnoun

Synonym of articaine.

ultracapableadj

Highly capable.

ultracapacitornoun

A supercapacitor.

ultracapitalismnoun

Extreme capitalism; an economic or social system characterized by unrestrained, extreme, or hyper-competitive capitalist practices.

ultracapitalistadj

Extremely capitalist; exhibiting, pertaining to, or characterized by extreme capitalism.

ultracarbonaceousadj

Extremely rich in carbon or carbon compounds.

ultracarefuladj

Extremely careful.

ultracasualadj

Extremely casual.

ultracautiousadj

Extremely cautious

ultracellularadj

Describing ultramicroscopic cellular features

ultracentenariannoun

A person who is over a hundred years old

ultracentenarianismnoun

The condition of a person being over a hundred years old.

ultracentrifugaladj

Relating to ultracentrifugation.

ultracentrifugallyadv

By means of an ultracentrifuge

ultracentrifugateverb

To separate by means of an ultracentrifuge.

ultracentrifugatedverb

simple past and past participle of ultracentrifugate

ultracentrifugationnoun

Centrifugation in an ultracentrifuge.

ultracentrifugenoun

A high-speed centrifuge, especially one free from convection that is used to separate colloidal particles.

ultracentrifugedadj

Prepared or separated using an ultracentrifuge

ultraceremoniousadj

extremely ceremonious

ultracharmingadj

Very charming; delightful.

ultracheapadj

Extremely cheap

ultrachicadj

Very stylish or elegant.

ultraciviladj

extremely civil

ultracivilizedadj

Extremely civilized.

ultracleanadj

Exceptionally clean.

ultraclearadj

Very clear

Spelling & Dictionary Insight

The English alphabetical index for the letter U contains 23,789 headwords drawn from our Wiktionary-derived dictionary table. At 50 entries per page the browse splits into 476 pages, and you are currently viewing page 14. 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 "U" 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.