Definition of improbity in English:

improbity

noun

formal
  • Wickedness or dishonesty.

    • ‘‘She does not accept red envelopes or construction kickbacks, indeed, never commits any form of improbity,’ he said.’
    • ‘It is the keenest spur to exertion and the surest of all guards against improbity.’
    • ‘The ruling party has distorted the history of the liberation struggle in this country beyond fiction, bigotry and improbity.’

Origin

Late 16th century: from Latin improbitas, from improbus wicked from in- not + probus good Compare with probity.

Pronunciation:

improbity

/imˈprōbədē/