संस्‍कृतशब्‍दकोशः

उपजापक

विघटक‚ भेदक

rousing to rebellion, sowing dissension

Monier–Williams

उपजापक — {upa-jāpaka} mfn. one who brings over to his party or one who rouses to rebellion (by whispering into the ear &c.) Mn. ix, 275