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Allin

improper

adjectiveverbattested in dialogue

  • United Kingdom//ɪmˈpɹɒp.ə//
  • United States//ɪmˈpɹɑ.pɚ//
  • Australia//ɪmˈpɹɔp.ə//

Unsuitable to needs or circumstances; inappropriate; inapt.

adjective

  1. 1

    Unsuitable to needs or circumstances; inappropriate; inapt.

  2. 2

    Not in keeping with conventional mores or good manners; indecent or immodest.

    improper conduct

  3. 3

    Not according to facts; inaccurate or erroneous.

  4. 4

    Not consistent with established facts; incorrect.

  5. 5

    Not properly named; See, for example, improper fraction.

  6. 6

    obsoleteNot specific or appropriate to individuals; general; common.

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

  7. 7

    Of a complex random variable, correlated with its conjugate.

Etymology

From Middle French impropre, from Latin improprius (“not proper”), from in- + proprius (“proper”). By surface analysis, im- + proper.

verb

  1. 1

    obsoleteTo appropriate; to assign (something, to someone) as a possession or prerogative.

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

    For quotations using this term, see Citations:improper.

Etymology

From Middle English empropren, perhaps from an unattested Anglo-Norman variant enproprier of Anglo-Norman apropr(i)er, approprier, related to modern French approprier.

Forms

comparative
more improper
superlative
most improper
past tense
impropered
past participle
impropered
present participle
impropering
third person singular
impropers
The neighbouring pagesAlphabetical order follows the rules of the language, not byte values: an accent decides only between two otherwise identical words, and Spanish files Ñ as a letter of its own.

Lexical content from Wiktionary, under CC BY-SA 4.0 · Source entry · Data version 2026-08-23

Rank among the words of the OpenSubtitles 2018 corpus — film and television subtitles, so spoken rather than written usage (CC BY-SA 3.0).