Dictionary > English Dictionary > Definition, synonym and antonym of improper
Meaning of improper by Wiktionary Dictionary


    Alternative forms


    From Latin improprius ( “not proper” ), from in- + proprius ( “proper” ) .


    • ( RP ) IPA: /ɪmˈprɒp.ə/
    • ( Australia ) IPA: /ɪmˈprɔp.ə/
    • ( GenAm ) IPA: /ɪmˈprɑ.pɚ/
    • Rhymes: -ɒpə( ɹ )


    improper ( comparative more improper, superlative most improper )

    1. unsuitable to needs or circumstances; inappropriate; inapt
    2. Not in keeping with conventional mores or good manners; indecent or immodest
    3. Not according to facts; inaccurate or erroneous
    4. Not consistent with established facts; incorrect
    5. Not properly named; See, for example, improper fraction


    to improper

    1. ( obsolete ) To appropriate
    2. ( obsolete ) To behave improperly

Explanation of improper by Wordnet Dictionary


    1. not appropriate for a purpose or occasion

    2. not suitable or right or appropriate

    3. slightly improper to dine alone with a married man
      improper medication
      improper attire for the golf course
    4. not conforming to legality, moral law, or social convention

    5. improper banking practices

    Definition of improper by GCIDE Dictionary


    1. Improper a. [F. impropre, L. improprius; pref. im- not + proprius proper. See Proper.]
      1. Not proper; not suitable; not fitted to the circumstances, design, or end; unfit; not becoming; incongruous; inappropriate; indecent; as, “an improper medicine; improper thought, behavior, language, dress.”

      Follow'd his enemy king, and did him service,

      Improper for a slave. Shak.

      And to their proper operation still,

      Ascribe all Good; to their improper, Ill. Pope.

      2. Not peculiar or appropriate to individuals; general; common. [Obs.]

      Not to be adorned with any art but such improper ones as nature is said to bestow, as singing and poetry. J. Fletcher.

      3. Not according to facts; inaccurate; erroneous.

      Improper diphthong. See under Diphthong. -- Improper feud, an original feud, not earned by military service. Mozley & W. -- Improper fraction. See under Fraction.

    2. Improper, v. t. To appropriate; to limit. [Obs.]

      He would in like manner improper and inclose the sunbeams to comfort the rich and not the poor. Jewel.