• (GA) IPA: /ˈsɪŋɡjəlɚ/
  • (RP) IPA: /ˈsɪŋɡjʊlə/


  1. Being only one of a larger population.
    A singular experiment cannot be regarded as scientific proof of the existence of a phenomenon.
    Synonyms: individual
    Antonyms: general
  2. Being the only one of the kind; unique.
    She has a singular personality.
    • 1705 (revised 1718), Joseph Addison, Remarks on Several Parts of Italy
      The busts […] of the emperors and empresses are all very scarce, and some of them almost singular in their kind.
    • And God forbid that all a company / Should rue a singular man's folly.
    Synonyms: unique
  3. Distinguished by superiority: peerless, unmatched, eminent, exceptional, extraordinary.
    a man of singular gravity or attainments
    Synonyms: exceptional, extraordinary, remarkable
  4. Out of the ordinary; curious.
    It was very singular; I don't know why he did it.
    • So singular a sadness / Must have a cause as strange as the effect.
    • 1667, John Milton, “Book 5”, in Paradise Lost. A Poem Written in Ten Books, London: Printed [by Samuel Simmons], and are to be sold by Peter Parker […] [a]nd by Robert Boulter […] [a]nd Matthias Walker, […], OCLC 228722708 ↗; republished as Paradise Lost in Ten Books: The Text Exactly Reproduced from the First Edition of 1667: […], London: Basil Montagu Pickering […], 1873, OCLC 230729554 ↗:
      His zeal / None seconded, as out of season judged, / Or singular and rash.
    Synonyms: curious, eccentric, funny, odd, peculiar, rum, rummy, strange, unusual
  5. (grammar) Referring to only one thing or person.
    Antonyms: plural
  6. (linear algebra, of matrix) Having no inverse.
    Synonyms: non-invertible
    Antonyms: invertible, non-singular
  7. (linear algebra, of transformation) Having the property that the matrix of coefficients of the new variables has a determinant equal to zero.
  8. (set theory, of a cardinal number) Not equal to its own cofinality.
  9. (law) Each; individual.
    to convey several parcels of land, all and singular
  10. (obsolete) Engaged in by only one on a side; single.
    • to try the matter thus together in a singular combat
Synonyms Antonyms Translations Translations Translations Translations Translations Translations Noun

singular (plural singulars)

  1. (grammar) A form of a word that refers to only one person or thing.
    Antonyms: plural
  2. (logic) That which is not general; a specific determinate instance.
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