different between deceptive vs imaginary

English

Etymology

From Middle French déceptif, from Latin d?cept?vus, from d?cipi? (“I deceive”).

Pronunciation

• IPA^(key): /d?.?s?p.t?v/

Adjective

deceptive (comparative more deceptive, superlative most deceptive)

1. Likely or attempting to deceive.

   Synonym: misleading

   • 1653, John Bulwer, Anthropometamorphosis, London: William Hunt, Scene 24, p. 521,^[1]

     […] others declare that no Creature can be made or transmuted into a better or worse, or transformed into another species […] and Martinus Delrio the Jesuit accounts this degeneration of Man into a Beast to be an illusion, deceptive and repugnant to Nature;

   • 1789, Thomas Holcroft (translator), The History of My Own Times by Frederick the Great, London: G.G.J. and J. Robinson, Part 1, Chapter 12, p. 163,^[2]

     […] at the opening of the campaign, the French, after various deceptive attempts on different places, suddenly invested Tournay.

   • 1846, Richard Chenevix Trench, Notes on the Miracles of Our Lord, London: John W. Parker, 2nd ed., 1847, Preliminary Essay, Chapter 2, p. 10,^[3]

     language altogether deceptive, and hiding the deeper reality from our eyes

   • 1978, Susan Sontag, Illness as Metaphor, New York: Farrar, Straus and Giroux, Chapter 2, p. 13,^[4]

     […] it is characteristic of TB that many of its symptoms are deceptive—liveliness that comes from enervation, rosy cheeks that look like a sign of health but come from fever—and an upsurge of vitality may be a sign of approaching death.

Synonyms

• See also Thesaurus:deceptive

Derived terms

Related terms

Translations

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