Definition of improper in English:

improper

Line breaks: im|proper
Pronunciation: /ɪmˈprɒpə
 
/

adjective

1Not in accordance with accepted standards, especially of morality or honesty: the improper use of public funds it was considered improper to leave one’s house on Christmas Day
More example sentences
  • The fall in stock market values is attributed mainly to concerns about improper accounting standards.
  • If there's a potential conflict of interest or improper influence, the public has a right to know.
  • Many acts may look improper and unethical, yet there may have been a good reason for them.
Synonyms
inappropriate, unacceptable, unsuitable, unprofessional, irregular, illegitimate, against the rules; unethical, corrupt, immoral, dishonest, dishonourable, unscrupulous
informal crooked, not cricket
indecent, risqué, off colour, indelicate, suggestive, naughty, ribald, earthy, Rabelaisian, smutty, dirty, filthy, vulgar, crude, rude, obscene, lewd, pornographic
British informal fruity, saucy
1.1Lacking in modesty or decency: an improper suggestion
More example sentences
  • She had spoken without being asked a question, which was improper and impolite.
  • The doctor, a married father of three, accepts meeting Miss A outside work but denied any improper conduct took place.
  • Our children unfortunately are not generally made aware that behaving rudely is improper.
Synonyms
unseemly, indecorous, unbecoming, unfitting, out of keeping, unladylike, ungentlemanly, indiscreet, indelicate, impolite, undignified; indecent, unwholesome, immodest, immoral; outrageous, scandalous, shocking, offensive, distasteful; forward, bold, brazen, shameless
informal fresh, cheeky

Origin

late Middle English: from French impropre or Latin improprius, from in- 'not' + proprius 'one's own, proper'.

Derivatives

improperly

adverb
More example sentences
  • There is no suggestion that either expert acted improperly.
  • At the end of the exercise, 40 persons were found to be improperly receiving welfare assistance.
  • Superclubs operate strict door policies, turning up their noses at gangs of unaccompanied men or the improperly dressed.

Definition of improper in:

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Pronunciation: ɪnˈvɛnəm
verb
put poison on or into; make poisonous