different between spurious vs imaginary

English

Etymology

Borrowed from Late Latin spurius (“illegitimate, bastardly”), possibly related to sperno or from Etruscan.

Pronunciation

• (Received Pronunciation) IPA^(key): /?spj??.?i.?s/
• (US) IPA^(key): /?spj?.?i.?s/, /?sp?.?i.?s/, /?spj?.?i.?s/
• Rhymes: -???i?s

Adjective

spurious (comparative more spurious, superlative most spurious)

1. False, not authentic, not genuine.

   His argument was spurious and had no validity.

   • 2013, Russell Brand, Russell Brand and the GQ awards: 'It's amazing how absurd it seems' (in The Guardian, 13 September 2013)[1]

     We witness that there is a relationship between government, media and industry that is evident even at this most spurious and superficial level. These three institutions support one another. We know that however cool a media outlet may purport to be, their primary loyalty is to their corporate backers. We know also that you cannot criticise the corporate backers openly without censorship and subsequent manipulation of this information.
2. Extraneous; stray; not relevant or wanted.

   I tried to concentrate on the matter in hand, but spurious thoughts kept intruding.

   Spurious emissions from the wireless mast were causing nearby electrical equipment to go haywire.

3. (archaic) bastardly, illegitimate

Synonyms

• (false): counterfeit, fake, false, bogus
• See also Thesaurus:fake
• See also Thesaurus:illegitimate

Antonyms

• (false): genuine, representative

Derived terms

• spuriosity
• spuriously
• spuriousness

Translations

See also

• specious

English

Etymology

From Middle French imaginaire, from Latin im?gin?rius (“relating to images, fancied”), from im?g?.

The mathematical sense derives from René Descartes's use (of the French imaginaire) in 1637, La Geometrie, to ridicule the notion of regarding non-real roots of polynomials as numbers. Although Descartes' usage was derogatory, the designation stuck even after the concept gained acceptance in the 18th century.

Pronunciation

• (Received Pronunciation) IPA^(key): /??mæd??n(?)?i/
• (General American) IPA^(key): /??mæd???n??i/

Adjective

imaginary (comparative more imaginary, superlative most imaginary)

1. Existing only in the imagination.

   • Wilt thou add to all the griefs I suffer / Imaginary ills and fancied tortures?

2. (mathematics, of a number) Having no real part; that part of a complex number which is a multiple of ${\displaystyle {\sqrt {-1}}}$ (called imaginary unit).

Synonyms

• (existing only in the imagination): all in one's head

Derived terms

• imaginarily
• imaginariness
• imaginarity
• imaginary number
• imaginary unit

Translations

Noun

imaginary (plural imaginaries)

1. Imagination; fancy. [from 16th c.]
   • 2002, Colin Jones, The Great Nation, Penguin 2003, p. 324:

     By then too Mozart's opera, from Da Ponte's libretto, had made Figaro a stock character in the European imaginary and set the whole Continent whistling Mozartian airs and chuckling at Figaresque humour.
2. (mathematics) An imaginary quantity. [from 18th c.]
3. (sociology) The set of values, institutions, laws, and symbols common to a particular social group and the corresponding society through which people imagine their social whole.

References