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Defective vs Improper - What's the difference?

defective | improper |

As adjectives the difference between defective and improper

is that defective is having one or more defects while improper is unsuitable to needs or circumstances; inappropriate; inapt.

As a noun defective

is a person considered to be defective.

As a verb improper is

to appropriate; to limit.

defective

English

Adjective

(en adjective)
  • Having one or more defects.
  • * {{quote-magazine, date=2013-03
  • , author= , title=The Smallest Cell , volume=101, issue=2, page=83 , magazine= citation , passage=It is likely that the long evolutionary trajectory of Mycoplasma went from a reductive autotroph to oxidative heterotroph to a cell-wall–defective degenerate parasite. This evolutionary trajectory assumes the simplicity to complexity route of biogenesis, a point of view that is not universally accepted.}}
  • lacking some forms; e.g., having only one tense or being usable only in the third person.
  • Usage notes

    * Nouns to which "defective" is often applied: merchandise, goods, part, component, product, equipment, gene, unit, construction, design, drug, memory, wiring, machine, device, instrument, hardware, software, vehicle.

    Synonyms

    * faulty

    Noun

    (en noun)
  • A person considered to be defective.
  • * {{quote-news, year=2007, date=January 15, author=Bernard E. Harcourt, title=The Mentally Ill, Behind Bars, work=New York Times citation
  • , passage=There were many more kinds of mental institutions at mid-century, ones for “mental defectives and epileptics” and the mentally retarded, psychiatric wards in veterans hospitals, as well as “psychopathic” and private mental hospitals. }}

    See also

    *

    improper

    English

    Alternative forms

    * impropre (obsolete)

    Adjective

    (en adjective)
  • unsuitable to needs or circumstances; inappropriate; inapt
  • Not in keeping with conventional mores or good manners; indecent or immodest
  • Not according to facts; inaccurate or erroneous
  • Not consistent with established facts; incorrect
  • Not properly named; See, for example, improper fraction
  • (obsolete) Not specific or appropriate to individuals; general; common.
  • * J. Fletcher
  • Not to be adorned with any art but such improper ones as nature is said to bestow, as singing and poetry.

    Derived terms

    * improper divisor * improper face * improper fit * improper fraction * improper integral * improper motion * improper node * improper orthogonal transformation * improper rotation * improper use * improper workmanship

    Verb

    (en verb)
  • (obsolete) To appropriate; to limit.
  • * Jewel
  • He would in like manner improper and inclose the sunbeams to comfort the rich and not the poor.
  • (obsolete) To behave improperly
  • (Webster 1913)