English Words: U

23,789 words · Page 142 of 476

undern-bellnoun

A bell rung to mark the undern-song.

undern-songnoun

Synonym of terce (“the service appointed for the third hour of daylight”).

undern-timenoun

The third hour of daylight (about 9 am); terce.

undernamedadj

Whose name appears underneath, or further down in a document.

undernatantadj

Synonym of surnatant.

undernaturenoun

An underlying, secretive, or surreptitious nature.

underneathadv

Below; in a place beneath.

underneath one's breathprep_phrase

Synonym of under one's breath.

underneathnessnoun

The quality of being underneath.

underneathsnoun

plural of underneath

undernessnoun

The quality of being under (beneath or below).

undernetnoun

The criminal underworld in cyberspace.

underneutralizationnoun

The process of underneutralizing.

underneutralizeverb

To make less neutral than required or expected, or (chemistry) closer to the neutral pH value without reaching it.

undernicenessnoun

Lack of delicacy or fastidiousness.

undernoseadj

Located under the nose of the aircraft

undernotenoun

A low or subdued note, such as a drone, that forms a background to the melody.

undernotedadj

Of which a note is made underneath, or further down in a document.

undernotificationnoun

Incomplete notification (typically of deaths)

undernourishverb

To provide with insufficient nourishment.

undernourishedadj

Provided with insufficient nourishment to sustain proper health and growth.

undernourishmentnoun

Insufficient nourishment

undernursenoun

A subordinate nurse.

undernutritionnoun

Inadequate nutrition, either due to a lack of food, or to the inability of the body to absorb its nutrients.

undernutritionaladj

Relating to undernutrition

undernutritiousadj

Offering inadequate nutrition.

underobturationnoun

Insufficient obturation; an imperfect stopping up, or underfilling.

underoccupancynoun

The occupancy of a building by fewer people than it could reasonably house.

underoccupationnoun

Insufficient occupation; the state of being occupied by too few.

underoccupiedadj

Not occupied enough, especially of a building with housing units.

underofficernoun

A subordinate officer.

underofficeredadj

Having too few officers.

underofficialnoun

A subordinate official.

underogatingadj

Not derogating.

underogatoryadj

Not derogatory.

underoilverb

To oil too little.

underoosnoun

A set of matching briefs and top (usually a sleeveless shirt or T-shirt) themed after a superhero or other fictional character, popular with children in the 1980s.

underoperateverb

To perform too few surgical operations.

underoptimizationnoun

The act or process of underoptimizing.

underoptimizeverb

To optimize to an inadequate degree.

underorderverb

To order too little or too few.

underorganizationnoun

Insufficient organization.

underorganizedadj

Lacking organization.

underossifiedadj

Insufficiently ossified

underoxidizeverb

To oxidize insufficiently.

underoxygenateverb

To oxygenate insufficiently.

underoxygenatedadj

Having insufficient oxygen.

underoxygenationnoun

The state of being underoxygenated.

underpackverb

To pack too little.

underpackageverb

To pack inadequately in too little packaging.

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 142. 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.