English words: undeadliness to undeliberated

300 English words, part 22 of 88 of the words starting with U, A to Z. 12 have a page of their own.

English words undeadliness to undeliberated

undeadliness noun: The condition of not being susceptible to death; immortality.
undeadly adjective, adverb: Not subject to death; immortal.
undeadness noun: The state or condition of being undead.
undeaf verb: To free from deafness.
undeafen verb: To free from deafness; to restore hearing to.
undeafened adjective, verb: Not deafened.
undeafferented adjective: Not deafferented.
undealable adjective: That cannot be dealt with.
undealt adjective: Not dealt.
undean verb: To deprive of the office or dignity of a dean.
undear adjective: Not dear.
undeath noun: The state of being undead.
undeathliness noun: The state or condition of being undeathly; immortality.
undebarred adjective: Not debarred.
undebased adjective: Not debased.
undebatable adjective: Not debatable; that cannot be debated.
undebatably adverb: In a way that is not debatable; in an undebatable way.
undebated adjective: Not having been debated or disputed
undebating adjective: Not engaging in debate.
undebauched adjective: Not debauched.
undebilitated adjective: Not debilitated
undebilitating adjective: Not debilitating.
undebrided adjective: Not debrided.
undebriefed adjective: Not debriefed.
undebuggability noun: The quality of being undebuggable.
undebuggable adjective: That cannot be debugged.
undebugged adjective: That has not been debugged.
undebunked adjective: Not debunked.
undebuted adjective: Not debuted; not formally introduced or released.
undec- prefix: Alternative form of undeca- used before a vowel.
undeca- prefix: eleven
undecaacetate noun: Any compound that has eleven acetate groups (typically of a disaccharide)
undecaborate noun: Eleven borate anions in a compound
undecadent adjective: Not decadent.
undecaffeinated adjective: Not decaffeinated.
undecagon noun: A polygon with eleven sides and eleven angles.
undecagonal adjective: Having eleven sides and angles.
undecahedron noun: A polyhedron with eleven faces.
undecaheme noun: Eleven heme groups in a molecule
undecahydrate noun: A hydrate whose solid contains eleven molecules of water of crystallization per molecule, or per unit cell
undecahydroxy noun: Chemical containing eleven hydroxy groups, (OH)₁₁
undecalcified adjective: From which calcareous matter has not been removed.
undecamer noun: An oligomer having eleven subunits.
undecameric adjective: Of or pertaining to an undecamer.
undecan noun: undecane.
undecanal noun: The saturated aliphatic aldehyde having eleven carbon atoms.
undecane noun: Any of many isomers of the aliphatic hydrocarbon having 11 carbon atoms, but especially n-undecane CH₃(CH₂)₉CH₃
undecanoate noun: Any salt or ester of undecanoic acid.
undecanoic adjective: Of or pertaining to undecanoic acid or its derivatives
undecanoic acid noun: The saturated fatty acid having 11 carbon atoms - CH₃(CH₂)₉COOH
undecanol noun: A fatty alcohol with a citrus odour, sometimes used as flavouring.
undecanone noun: Any aliphatic ketone that has eleven carbon atoms
undecanoyl noun: The univalent radical derived from undecanoic acid by loss of the hydroxy group
undecanucleotide noun: An oligonucleotide that has eleven base pairs
undecaoxide noun: Any oxide having eleven oxygen atoms
undecapeptide noun: Any oligopeptide that has eleven amino acid units
undecapitated adjective: Not decapitated
undecapotassium noun: Eleven potassium atoms or ions in a compound (K₁₁).
undecaprenol noun: An isoprenoid alcohol (having 11 isoprene units) that has a role in peptidoglycan biosynthesis
undecaprenyl noun: The univalent radical derived from undecaprenol
undecasulfide noun: A sulfide containing eleven sulfur functional groups or ions.
undecasyllabic adjective: Having eleven syllables.
undecayable adjective: Not decayable
undecayed adjective: Not having decayed.
undecaying adjective: That does not decay; lasting, imperishable.
undecazinc noun: A chemical compound containing eleven zinc atoms per formula: Zn₁₁.
undeceased adjective, noun: Not deceased; alive.
undeceitful adjective: Not deceitful.
undeceitfully adverb: In a way that is not deceitful.
undeceivable adjective: Not deceivable.
undeceivableness noun: The quality of being undeceivable.
undeceivably adverb: In an undeceivable way.
undeceive verb: To free from misconception, deception or error.
undeceived adjective, verb: Not having been deceived.
undeceiver noun: One who undeceives.
undecelerated adjective: Not decelerated.
undecemvirate noun: Alternative form of undecimvirate.
undecene noun: Any unsaturated aliphatic hydrocarbon that has eleven carbon atoms and one double bond, but especially 1-undecene
undecennary adjective: Once every eleven years; undecennial.
undecennial adjective: Occurring or observed every eleventh year.
undecenoate noun: Any salt or ester of undecenoic acid.
undecenoic acid noun: undecylenic acid
undecent adjective: Not decent; indecent.
undecently adverb: Unsuitably; improperly.
undecentralized adjective: Not decentralized.
undeception noun: The point of being undeceived or freed from a misconception.
undeceptive adjective: Not deceptive.
undeceptively adverb: In an undeceptive manner.
undecet noun /ˌʌndɛˈsɛt/: A group of eleven musicians; a piece of music written for such a group
undechorionated adjective: Not dechorionated
undecic adjective: Of the eleventh order or degree
undecidability noun: the state of being undecidable.
undecidable adjective: Incapable of being algorithmically decided in finite time. For example, a set of strings is undecidable if it is impossible to program a computer (even one...
undecidably adverb: In an undecidable manner.
undecide verb: To reverse or go back on (a previous decision).
undecideable adjective: Alternative form of undecidable.
undecided adjective, noun, verb /ˌʌndɪˈsaɪ̯.dɪd/: Open and not yet settled or determined.
undecidedly adverb: in an undecided manner
undecidedness noun: The quality of being undecided.
undecidualized adjective: Not decidualized
undeciduous adjective: Not deciduous
undecillion number /ˌʌndəˈsɪl.i.ən/: 10³⁶.
undecillionth adjective, noun: The ordinal form of the number undecillion
undecimal adjective: Based upon the number eleven
undecimalized adjective: Not decimalized.
undecimarticulate adjective: Having eleven joints.
undecimated adjective: Not decimated.
undecimic adjective: Alternative form of undecic.
undecimvir noun: Any member of a group of eleven officials.
undecimvirate noun: A group of eleven people, especially (politics) a council of eleven men sharing office or power and particularly (historical) the groups of eleven...
undecipher verb: To decipher.
undecipherability noun: Inability to be deciphered.
undecipherable adjective /ʌndɪˈsaɪfəɹəbəl/: Not easily deciphered; difficult to read.
undecipherably adverb: In an undecipherable manner.
undeciphered adjective, verb: Not deciphered.
undeciphering adjective, verb: That does not decipher.
undecisive adjective: Alternative form of indecisive.
undecisively adverb: Alternative form of indecisively.
undecisiveness noun: Alternative form of indecisiveness.
undeck verb: To remove ornaments from; to strip.
undecked adjective: Having no deck.
undeclaimed adjective: Not declaimed.
undeclamatory adjective: Not declamatory.
undeclarable adjective: Not declarable
undeclaration noun: The act of undeclaring something previously declared.
undeclare verb: To reverse the process of declaring; to unsay.
undeclared adjective: Not declared
undeclared work noun: work for which payment is made but no taxation is paid
undeclinable adjective, noun: Synonym of indeclinable.
undeclinably adverb: Synonym of indeclinably
undeclined adjective: Not varied by declension.
undeclining adjective: Not declining.
undecocted adjective: Not decocted.
undecodable adjective: That cannot be decoded.
undecodeable adjective: Alternative spelling of undecodable.
undecoded adjective: Not decoded.
undecohered adjective: Not decohered
undecoic acid noun: Synonym of undecanoic acid.
undecolic acid noun: An acid, C₁₁H₁₈O₂, of the propiolic acid series, obtained indirectly from undecylenic acid.
undecolonized adjective: Not decolonized.
undecomposability noun: The state or condition of being undecomposable.
undecomposable adjective: Unable to be decomposed.
undecomposed adjective: Not decomposed.
undecompounded adjective: Not decompounded.
undeconstructable adjective: Not deconstructable.
undeconstructed adjective: Not deconstructed.
undeconstructible adjective: Alternative form of undeconstructable.
undeconvolved adjective: Not deconvolved.
undecorable adjective: Not decorable.
undecoratable adjective: Not decoratable.
undecorate verb: To remove the decorations from.
undecorated adjective: Without decoration or adornment
undecorative adjective: Not decorative.
undecorous adjective: Not decorous.
undecorously adverb: In an undecorous manner.
undecorousness noun: Alternative form of indecorousness.
undecorticated adjective: Not decorticated.
undecoyed adjective: Not decoyed.
undecreased adjective: Not decreased.
undecreasing adjective: Not decreasing; growing no smaller.
undecree verb: To annul or revoke (an earlier decree).
undecreed adjective: Not decreed.
undecremented adjective: That has not been decremented.
undecried adjective: Not decried.
undecryptable adjective: That cannot be decrypted.
undecrypted adjective: Not decrypted.
undecuple adjective: having 11 parts or members
undecuplet noun: A group of eleven notes, typically to be played in place of eight.
undecyl noun: Any univalent radical derived from an undecane
undecylaldehyde noun: Synonym of undecanal.
undecylate noun: Any salt or ester of undecylic acid.
undecylenate noun: Any salt or ester of undecylenic acid.
undecylenic acid noun: An organic unsaturated fatty acid derived from natural castor oil (ricinoleic acid). It has fungicidal properties and is used in the treatment of skin...
undecylic adjective: Related to, derived from, or containing undecyl.
undecylic acid noun: undecanoic acid
undecylprodigiosin noun: The undecyl derivative of prodigiosin
undecyne noun: Any aliphatic hydrocarbon having a chain of eleven carbon atoms and containing one triple bond.
undedicate verb: To undo the dedication or earmarking of.
undedicated adjective, verb: Not dedicated.
undeduced adjective: Not deduced.
undeducible adjective: Not deducible.
undeducted adjective: Not deducted.
undeductive adjective: Not deductive.
undee adjective: Alternative form of undé.
undeeded adjective: Not transferred by deed.
undeemed adjective: Not deemed.
undeep adjective: Not deep; shallow.
undeerlike adjective: Not deerlike.
undef adjective: Abbreviation of undefined.
undefaceable adjective: Not defaceable.
undefaced adjective: Not having been defaced.
undefalcated adjective: Not defalcated.
undefamed adjective: Not defamed.
undefaulted adjective: Not defaulted upon.
undefaulting adjective: That does not default.
undefeat noun: The condition of not having been defeated.
undefeatability noun /ʌndəˌfiːtəˈbɪləti/: The quality of being undefeatable; undefeatableness.
undefeatable adjective, noun /ˌʌndəˈfiːtəbəl/: Not defeatable; impossible to defeat.
undefeatableness noun /ˌʌndəˈfiːtəbəlnəs/: The quality of being undefeatable.
undefeatably adverb: Such that it cannot be defeated.
undefeated adjective: Never defeated; always victorious.
undefeatedly adverb: Without having been defeated.
undefeatedness noun: The quality of being undefeated.
undefecated adjective: Unpurified.
undefectible adjective: Alternative form of indefectible.
undefective adjective: Not defective.
undefectiveness noun: Quality of being undefective.
undefence noun: An undefended condition.
undefenced adjective: Undefended.
undefendability noun: The quality of being undefendable; inability to be defended.
undefendable adjective: Not capable of being defended
undefendably adverb: Such that it cannot be defended.
undefended adjective: Not defended.
undefendedness noun: The state or condition of being undefended.
undefensed adjective: Alternative form of undefenced.
undefensible adjective: Not defensible.
undefensive adjective: Not defensive.
undefensively adverb: In an undefensive manner.
undeferability noun: Alternative form of undeferrability.
undeferential adjective: Not showing appropriate respect or courtesy.
undeferentially adverb: Without deference.
undeferrability noun: The state or condition of being undeferrable.
undeferrable adjective: Not deferrable.
undeferred adjective: Not deferred.
undefiable adjective: That cannot be defied.
undefiant adjective: Not defiant.
undeficient adjective: Not deficient.
undefied adjective: Not defied; unopposed, unresisted.
undefilable adjective: Incapable of being defiled.
undefiled adjective /ˌən.dəˈfaɪld/: Free from stain, blemish, evil or corruption; immaculate; uncorrupted.
undefiledly adverb: Without having been defiled.
undefiledness noun: The quality of being undefiled.
undefinability noun: The quality of being undefinable.
undefinable adjective, noun: Not definable.
undefinableness noun: The quality of being undefinable.
undefinably adverb: In an undefinable manner
undefine verb: To make indefinite; to obliterate or confuse the definition or limitations of.
undefined adjective, noun: Lacking a definition or value.
undefinedly adverb: In an undefined way.
undefinedness noun: The condition of being undefined
undefinite adjective: indefinite
undefinitely adverb: Indefinitely.
undefinition noun: The act of undefining; removal or cancellation of a definition.
undefinitive adjective: Not definitive.
undefinitized adjective: Not definitized.
undeflated adjective: Not deflated.
undeflectable adjective: Not deflectable.
undeflectably adverb: Such that it cannot be deflected or diverted.
undeflected adjective: Not deflected.
undeflectible adjective: Alternative form of undeflectable.
undeflowered adjective: Not having been deflowered; pure, virginal.
undefoliated adjective: Not defoliated.
undeform verb: To restore from a deformed state; to change back to its true or original shape.
undeformability noun: The quality of being undeformable.
undeformable adjective: Not capable of being deformed.
undeformably adverb: Such that it cannot be deformed.
undeformed adjective: Not deformed.
undefrauded adjective: Not having been defrauded.
undefrayed adjective: Not defrayed.
undefrosted adjective: Not defrosted.
undeft adjective: Not deft.
undefused adjective: Not defused.
undegassed adjective: From which the gas has not been removed
undegeneracy noun: The quality of being undegenerate.
undegenerate adjective: Not degenerate.
undegenerated adjective: Not degenerated
undegenerating adjective: Not degenerating.
undegradability noun: The condition of being undegradable
undegradable adjective: That is not easily degraded
undegraded adjective: Not degraded
undegrading adjective: Not degrading.
undegranulated adjective: Not degranulated
undegummed adjective /əndɪˈɡʌmd/: Not degummed; not (yet) having had gum removed.
undehiscent adjective: Not dehiscent
undehumanized adjective: Not dehumanized.
undehusked adjective: not dehusked
undehydrated adjective: Not dehydrated.
undeification noun: The process of undeifying.
undeified adjective, verb: Not deified.
undeify verb: To degrade from the state of deity; to deprive godness.
undeistic adjective: Not deistic.
undejected adjective: Not dejected.
undekha adjective /ʌnˈdeɪkə/: Not edited or abridged by a censor; uncut.
undelayable adjective: Not delayable.
undelayed adjective: Not delayed.
undelayedly adverb: Without delay.
undelaying adjective: Not delaying; prompt.
undelayingly adverb: Without delaying.
undelectable adjective: Not delectable.
undelectably adverb: In an undelectable manner.
undelegated adjective: nondelegated
undeletability noun: The state or quality of being undeletable.
undeletable adjective: That cannot be deleted; indelible.
undelete verb: To recover (a file, record, etc.) from a deleted state; restore.
undeleted adjective, verb: Not having been deleted.
undeleter noun: A program that undeletes.
undeleterious adjective: Not deleterious.
undeletion noun /ˌʌndɪˈliːʃən/: Restoration of previously deleted content.
undeliberate adjective: Not deliberate.
undeliberated adjective: Not deliberated.

Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0): each word's first meaning. A word with a page of its own links to it; for the rest, this line is PlainSpell's entry. Total under U: 26,317 words, in 88 parts.