nullable

N1U1L1L1A1B3L1E1

adjective

That may be nullified; nullifiable.

OriginEnglish null ← Middle French nu ← Old French nul →
UncommonScrabble 10
Ask AI about this wordChatGPTClaudePerplexityGoogle AIGrok

Meanings

adjectivenullable (not comparable)
  1. not comparableThat may be nullified; nullifiable.

    Then you regard as nullable and voidable the laws of Titius and Apuleius, because they are unjust.

    1841, F. Barham, The political works of Marcus Tullius Cicero
  2. not comparablecomputingThat is allowed to have a null value.

    You want to perform an aggregation on a column, but the column is nullable.

    2006, Anthony Molinaro, SQL Cookbook
nounnullable (plural nullables)

plural nullables

  1. computingA variable, etc. that is allowed to have a null value.

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
  9. Englishnullable

From null + -able.

Full word history & related roots →
Cite this entry
APA

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

MLA

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

Chicago

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

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