malapertness (uncountable)

1. (obsolete) The condition of being malapert. [15th-18th c.]
   • 1603, Michel de Montaigne, John Florio, transl., The Essayes, […], printed at London: By Val[entine] Simmes for Edward Blount […], OCLC 946730821 ↗:

     , II.12:

     if once it be possessed with the boldnesse to despise, and malapertnesse to impugne the opinions which tofore it held in awfull reverence […], they will soone and easily admit an equall uncertainty in all other parts of their beleefe […].