null

N1U1L1L1
Canada, UK/nʌl/US/nʊl/Australia, New Zealand/nɐl/Australia, New Zealand/nal/

noun

A non-existent or empty value or set of values.

Opposite
antinullnon-null
Very commonScrabble 4

Meanings

null1

nounnull (plural nulls)

plural nulls

  1. A non-existent or empty value or set of values.
  2. Zero quantity of expressions; nothing.

    The kindes of Cyphars, (beſides the Simple Cyphars with Changes, and the intermixtures of Nvlles, and Nonsignificants) are many, according to the Nature or Rule of infoulding : Wheele-Cyphars, Kay-Cyphars, Dovbles, &c.

    1605, Francis Bacon, “The Second Booke”, in The Twoo Bookes of Francis Bacon. Of the Proficience and Aduancement of Learning, Diuine and Humane, London: […] [Thomas Purfoot and Thomas Creede] for Henrie Tomes, […], →OCLC, folio 61, recto
  3. Something that has no force or meaning.
  4. computingThe null character; the ASCII or Unicode character (␀), represented by a zero value, which indicates no character and is sometimes used as a string terminator.
  5. computingThe attribute of an entity that has no valid value.

    Since no date of birth was entered for the patient, his age is null.

  6. One of the beads in nulled work.
  7. mathematicsThe null hypothesis.
adjectivenull (comparative more null, superlative most null)

comparative more null · superlative most null

  1. Having no validity; "null and void".
    1 more example

    And however Firmilian and S. Cyprian might be deceived in the thinking hereticks quite loſt their orders ; yet in this they were untouched, that although their ſuppoſition was queſtionable, yet their ſuperſtructure was not meddled with, viz. That if they had been Lay-perſons, their Baptizations were null and invalid.

    a. 1667, Rev. Jeremy Taylor, “Clerus Domini: or, A Discourse of the Divine Institution, Necessity, Sacredness, and Separation of the Office Ministerial”, in Ενιαυτος: A Course of Sermons for All the Sundays Of the year, 3rd edition, London: E. Tyler, page 19

    Synonyms: invalid, nude, void

  2. Insignificant.

    In proportion as we descend the social scale our snobbishness fastens on to mere nothings which are perhaps no more null than the distinctions observed by the aristocracy, but, being more obscure, more peculiar to the individual, take us more by surprise.

    1924, Marcel Proust, Within a Budding Grove

    Synonyms: immaterial, paltry, vain, base, contemptible, floccinaucinihilipilificatious, foolish, for the birds

  3. Absent or non-existent.

    The most recent attempt to contact Pioneer 10 was on 6-7 February 2003. But in this case, the Madrid station got conclusively null results after an assiduous search.

    2003 February 20, James A. Van Allen, “Termination of Pioneer 10's Mission”, in Pioneer 10 & 11 GTT Charged Particles, The University of Iowa

    Synonyms: beingless, extinct, zilch, absent, beingless, extinct, inessential, inexistent

  4. mathematicsOf the null set.
  5. mathematicsOf or comprising a value of precisely zero.
  6. biologyCausing a complete loss of gene function; amorphic.
  7. engineeringNeutral.
    1 more example

    In normal operation, the input cranks to both the MPCU and standby rudder actuator will rotate to provide the servo valve command to the units, and the rudder will be hydraulically moved by the MPCU. The rudder movement is in turn fed back mechanically to both the MPCU and standby actuator systems so that when the rudder surface deflects to the position commanded by the pilot, the input cranks on both of the units will be returned to their null positions. Thus, there is a geometric relationship between the rudder position, the input crank of the MPCU, the torque tube, and the input crank of the standby rudder actuator that is retained during normal operation.

    2001 March 27, National Transportation Safety Board, “1.16.3 Detail Examination and Tests of Standby Rudder Actuator Input Shaft and Bearing”, in Aircraft Accident Report: Uncontrolled Descent and Collision With Terrain, United Airlines Flight 585, Boeing 737-200, N999UA, 4 Miles South of Colorado Springs Municipal Airport, Colorado Springs, Colorado, March 3, 1991, archived from the original on 08 May 2022, pages 62–63
verbnull (third-person singular simple present nulls, present participle nulling, simple past and past participle nulled)

present singular third person nulls · participle present nulling · participle past nulled · past nulled

  1. archaictransitiveTo nullify; to annul.

    Thy fair enchanted cup, and warbling charms / No more on me have pow’r, their force is null’d, / So much of Adders wiſdom I have learnt / To fence my ear againſt thy Sorceries.

    1671, John Milton, “Samson Agonistes”, in Paradise Regain’d, 5th edition, London: Jacob Tonson, published 1707, page 144
  2. To return to the null position, setting, etc.
    1 more example

    Three factors could ameliorate the effect of a bound input shaft and bearing. The first is the elasticity of the control system linkage that, against a definable load, will permit sufficient deformation of the otherwise rigid link feedback loop to null the MPCU servo valve. The second factor is the application of a load sufficient to break loose the binding between the input shaft and bearing. The third factor is a loss of torque of the bearing in the standby rudder actuator housing to permit the rotation of the bearing and shaft together within the housing to compensate for the bound shaft.

    2001 March 27, National Transportation Safety Board, “1.16.3 Detail Examination and Tests of Standby Rudder Actuator Input Shaft and Bearing”, in Aircraft Accident Report: Uncontrolled Descent and Collision With Terrain, United Airlines Flight 585, Boeing 737-200, N999UA, 4 Miles South of Colorado Springs Municipal Airport, Colorado Springs, Colorado, March 3, 1991, archived from the original on 08 May 2022, page 63
  3. To form nulls, or into nulls, as in a lathe.
  4. slangtransitivecomputingTo crack; to remove restrictions or limitations in (software).

    A nulled or a cracked plugin is basically a hacked version of a paid plugin that offers its premium functionalities for free.

    2020, Tejas Mayekar, Destroyed In Seconds: 10 Mistakes That Will Destroy Your Website, page 6

Null2

proper nounNull (plural Nulls)

plural Nulls

Synonyms & antonyms

adjectiveHaving no validity; "null and void".

Opposite
antinullnon-null

More synonyms by meaning

adjectivelacking any legal or binding force

nouna quantity of no importance; thing (object:), singular, negative pronoun; pronoun, thing, singular; quantifier: negative existential

Broader
relative quantity

Synonym sets from Open English WordNet, CC BY 4.0.

Origin

  1. Proto-Indo-European*ís?
  2. Proto-Indo-European*h₁óynos
  3. Proto-Italic*oinos
  4. Proto-Italic*noinolos
  5. Latinnūllus
  6. Old Frenchnul
  7. Middle Frenchnu
  8. Englishnull

Borrowed from Middle French nul, from Latin nūllus.

Full word history & related roots →

Translations

Bulgarian празно множество, нулева хипотеза
  • празно множество (prazno množestvo)a non-existent or empty value or set of values
  • нулева хипотеза (nuleva hipoteza)a non-existent or empty value or set of values
  • празен указател (prazen ukazatel)a non-existent or empty value or set of values
  • празно полеa non-existent or empty value or set of values
Chinese Mandarin 空值
  • 空值 (kōngzhí)a non-existent or empty value or set of values
Finnish tyhjä
  • tyhjäa non-existent or empty value or set of values
French nul, nulle
  • nulTranslations
  • nulleTranslations
Japanese 無, 無価値
  • 無 (mu)a non-existent or empty value or set of values
  • 無価値 (mukachi)a non-existent or empty value or set of values
  • 空白 (kūhaku)a non-existent or empty value or set of values
  • ゼロ (zero)a non-existent or empty value or set of values
  • ヌル (nuru)a non-existent or empty value or set of values
Russian нуль, пусто́е по́ле
  • нуль (nulʹ)a non-existent or empty value or set of values
  • пусто́е по́ле (pustóje póle)a non-existent or empty value or set of values
  • пусто́й указа́тель (pustój ukazátelʹ)a non-existent or empty value or set of values
  • пусто́е значе́ние (pustóje značénije)a non-existent or empty value or set of values
  • нулл (null)a non-existent or empty value or set of values
  • налл (nall)a non-existent or empty value or set of values
Spanish valor nulo, nulo
  • valor nuloa non-existent or empty value or set of values
  • nuloTranslations
Vietnamese rỗng
  • rỗnga non-existent or empty value or set of values

Rhymes & wordplay

Rhymes with null

All rhymes →
Cite this entry
APA

null. (n.d.). In WatkinsX Dictionary. Retrieved November 2, 2026, from https://dictionary.watkinsx.com/word/null

MLA

“null.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/null. Accessed November 2, 2026.

Chicago

WatkinsX Dictionary, s.v. “null,” accessed November 2, 2026, https://dictionary.watkinsx.com/word/null.

Source: null on Wiktionary, CC BY-SA 4.0.