Source : Webster's Revised Unabridged Dictionary (1913)

Malapert \Mal"a*pert\, a. [OF. malapert unskillful, ill-taught,
   ill-bred; mal ill + apert open, adroit, intelligent, L.
   apertus, p. p. of aperire to open. See {Malice}, and
   {Aperient}.]
   Bold; forward; impudent; saucy; pert. --Shak. -- n. A
   malapert person.

         Are you growing malapert! Will you force me to make use
         of my authority ?                        --Dryden.
   -- {Mal"a*pert`ly}, adv. -- {Mal"a*pert`ness}, n.