quasiとは 意味・読み方・使い方

語源

Learned borrowing from Latin quasi (“as if”).

発音

• (英国発音) IPA: /ˈkweɪzaɪ/, /ˈkweɪsaɪ/, /ˈkwɑːzi/
• (米国発音) IPA: /ˈkwɑːˌzaɪ/, /ˈkwɑːzi/, /ˈkwɑːsi/, /ˈkweɪˌzaɪ/, /ˈkweɪˌsaɪ/
• 韻: -ɑːzi, -ɑːsi
• Homophone: quasi-

形容詞

quasi (not comparable)

1. Resembling or having a likeness to the named thing.
   • 1998, The Pentagon Wars:

     So in summation gentlemen. What you have before you is a troop transport that can't carry troops, a reconnaissance vehicle that's too conspicuous to do reconnaissance, and a quasi tank that has less armor than a snowblower, god has enough ammo to take out half of D.C.

   • 2000, Henry Martyn Robert with Sarah Corbin Robert, Robert's Rules of Order, 10th revised edition, page 522:

     The presiding officer of the assembly does not appoint a chairman of the quasi committee, but remains in the chair himself throughout its proceedings.

   • 2012 December, S. Shunmuga Krishnan, Ramesh K. Sitaraman, “Video Stream Quality Impacts Viewer Behavior: Inferring Causality Using Quasi-Experimental Designs”, in CNN en Español‎, archived from the original on 23 January 2026, page 3:

     In a quasi experiment, the likelihood of a viewer of short video abandoning earlier than a similar viewer of a long video exceeded the likelihood that the opposite happens by 11.5%.

派生語

関連する語

参照

Further reading

• “quasi”, in Dictionary.com Unabridged, Dictionary.com, LLC, 1995–present.
• “quasi”, in Merriam-Webster Online Dictionary, Springfield, Mass.: Merriam-Webster, 1996–present.

語源

Univerbation of quam (“how, as”) +‎ sī (“if”) with clitic shortening of the first vowel and iambic shortening of the second.

発音

• (Classical Latin) IPA: [ˈkʷa.siː], [ˈkʷa.sɪ]
• (modern Italianate Ecclesiastical) IPA: [ˈkʷaː.s̬i]
• Note: still found with the long final syllable in Lucretius, and again in late Latin poets.

接続詞

quasī̆

1. almost as if; like; as it were

   Synonyms: ceu, (perinde) ac sī, tanquam, velut, ut, sīcut

   quasi vērō nesciam! ― as if I don't know!

2. (Late Latin) on the grounds that

   quasi praedam male divisisset ― on that grounds that he had poorly divided the plunder

派生した語

参照

• Walther von Wartburg (1928–2002), “quasi”, in Französisches Etymologisches Wörterbuch, volume 2: C Q K, page 1428

Further reading

• “quasi”, in Charlton T. Lewis and Charles Short (1879), A Latin Dictionary, Oxford: Clarendon Press
• “quasi”, in Charlton T. Lewis (1891), An Elementary Latin Dictionary, New York: Harper & Brothers
• "quasi", in Charles du Fresne du Cange, Glossarium Mediæ et Infimæ Latinitatis (augmented edition with additions by D. P. Carpenterius, Adelungius and others, edited by Léopold Favre, 1883–1887)
• “quasi”, in Gaffiot, Félix (1934), Dictionnaire illustré latin-français, Hachette.
• Carl Meißner; Henry William Auden (1894), Latin Phrase-Book‎, London: Macmillan and Co.
  • to obscure the mental vision: mentis quasi luminibus officere (vid. sect. XIII. 6) or animo caliginem offundere
    
  • to represent a thing dramatically: sic exponere aliquid, quasi agatur res (non quasi narretur)
    
  • to make a cursory mention of a thing; to mention by the way (not obiter or in transcursu): quasi praeteriens, in transitu attingere aliquid
    
  • belief in God is part of every one's nature: omnibus innatum est et in animo quasi insculptum esse deum
    
  • I said en passant, by the way: dixi quasi praeteriens or in transitu
    

発音

• (英国発音) IPA: /ˈkweɪzaɪ/, /ˈkweɪsaɪ/, /ˈkwɑːzi/
• (米国発音) IPA: /ˈkweɪˌzaɪ/, /ˈkweɪˌsaɪ/, /ˈkwɑˌzaɪ/, /ˈkwɑzi/, /ˈkwɑsi/
• (Canada) IPA: /kwɑzi/, /kwæzi/, /-aɪ/, /-ʌɪ/
• 韻: -ɑːzi, -ɑːsi
• Homophone: quasi

接頭辞

quasi-

1. Almost; virtually.
   • 1974, Lawrence Durrell, Monsieur, Faber & Faber, published 1992, page 18:

     The quasi-death of insanity with its small periodic remissions, its deviations into good sense, even into brilliant insight, was almost more cruel really than outright death.

2. Apparently, seemingly, or resembling. [from 17th c.]
3. To a limited extent or degree; being somewhat or partially.
   • 2020 July 20, Simon Jenkins, “Britain deserves better than an Old Etonian Donald Trump”, in The Guardian‎, archived from the original on 12 August 2020:

     The British constitution famously rests on convention. This requires a compact between politicians working as a cabinet and a quasi-independent civil service.

使用する際の注意点

• Quasi- may be prefixed to nouns, verbs, adjectives, and adverbs.
• Words derived from quasi- are more often spelled with a hyphen than solid. Using hyphen is recommended by GPO manual. OED2 lists the derived terms as hyphenated.

同意語

• (almost): pene-, sub-
• (resembling): para-, -oid, -form/-iform, -esque, -ish, -ly, -some, -y, (restricted to casual registers) -ass, (forms adjectives from nouns only) -like
• (partial): partially, demi-, semi-
• (somewhat): sort of, semi-

派生語

• English terms prefixed with quasi-

  quasiabelian

  quasi-adjective

  quasi-alliance

  quasianalytic

  quasianalytical

  quasianalyticity

  quasar

  quasiarchaeological

  quasiatomic

  quasiballistic

  quasibarrelled

  quasibialgebra

  quasibinomial

  quasiblack

  quasiboson

  quasibound

  quasicentral

  quasicentroid

  quasichemical

  quasicircle

  quasicircular

  quasiclassic

  quasiclassical

  quasicoaxial

  quasicoherent

  quasi-compact

  quasicompact

  quasicomplete

  quasiconcave

  quasiconcavity

  quasicondensate

  quasicondensation

  quasiconformal

  quasiconformality

  quasiconformally

  quasicontinuous

  quasicontinuum

  quasi-contract

  quasicontractual

  quasicontroversial

  quasiconverb

  quasiconvex

  quasiconvexity

  quasicriminal

  quasicritical

  quasicrystal

  quasicrystalline

  quasicubic

  quasicycle

  quasicyclic

  quasidefinite

  quasidemocracy

  quasidemocratic

  quasiderivation

  quasi-derivative

  quasideterminant

  quasidiagonal

  quasidiagonality

  quasi-dictator

  quasi-differentiable

  quasidifferentiable

  quasidiscrete

  quasidisk

  quasidisorder

  quasidisordered

  quasidistribution

  quasi-divinity

  quasidocumentary

  quasidominance

  quasidominant

  quasidormant

  quasidynamical

  quasieconomic

  quasielastic

  quasielectron

  quasielliptical

  quasienantiomer

  quasienantiomeric

  quasienergy

  quasiequational

  quasiequilibrium

  quasiequivalence

  quasiequivalent

  quasiessential

  quasi-etymological

  quasiexperimental

  quasifederal

  quasi-federalist

  quasiferromagnet

  quasifeudal

  quasifield

  quasifinite

  quasifission

  quasifixation

  quasifree

  quasigeodesic

  quasigeostrophic

  quasigluon

  quasigovernment

  quasigovernmental

  quasigroup

  quasiharmonic

  quasihelical

  quasihemidemisemiquaver

  quasihexagon

  quasihexagonal

  quasihistorical

  quasihole

  quasihomogeneous

  quasihorizontal

  quasihydrostatic

  quasihyperbolic

  quasiidentity

  quasi-independent

  quasiinformation

  quasi-invariant

  quasiisometric

  quasiisometry

  quasi-isomorphism

  quasite

  quasijudicial

  quasilattice

  quasilegal

  quasilegislative

  quasilikelihood

  quasilinear

  quasilinearisation

  quasilinearity

  quasilinearization

  quasilinguistic

  quasiliteracy

  quasiliterate

  quasilocal

  quasilocalized

  quasilocally

  quasi-magical

  quasimathematical

  quasimeasure

  quasimedical

  quasimeromorphic

  quasimesenchymal

  quasimetric

  quasimicroscopic

  quasimilitary

  quasiminimal

  quasiminimality

  quasimiraculous

  quasimodal

  quasimode

  quasimodular

  quasimodularity

  quasimolecular

  quasimolecule

  quasimomentum

  quasi-money

  quasimoney

  quasimonochromatic

  quasimonoenergetic

  quasimonomorphic

  quasimonopolistic

  quasi-moon

  quasimunicipal

  quasimusical

  quasineutral

  quasineutrality

  quasineutron

  quasinilpotent

  quasinorm

  quasinormal

  quasinumerical

  quasioptical

  quasiorder

  quasiorganizational

  quasipalindrome

  quasipalindromic

  quasiparallel

  quasiparental

  quasiparticle

  quasiparticulate

  quasiparton

  quasiperfect

  quasiperiodic

  quasiperiodicity

  quasipermanent

  quasiperpendicular

  quasipinning

  quasiplanar

  quasiplatonic

  quasipolynomial

  quasipornographic

  quasipositive

  quasipotential

  quasiprimitive

  quasi-probability

  quasiprobability

  quasi-projective

  quasiproton

  quasipsychotic

  quasipublic

  quasi-stellar object

関連する語

• quango
• quasar

参考

• (false) pseudo-

参照

Further reading

• “quasi-”, in OneLook Dictionary Search.
• John A. Simpson and Edmund S. C. Weiner, editors (1989), “quasi-”, in The Oxford English Dictionary, 2nd edition, Oxford: Clarendon Press, →ISBN. -- lists many derived terms