By surface analysis, perfid + -itet. <span class="searchmatch">perfiditet</span> c (rare) perfidy <span class="searchmatch">perfiditet</span> in Svenska Akademiens ordböcker...
<span class="searchmatch">perfiditets</span> indefinite genitive singular of <span class="searchmatch">perfiditet</span>...
perfiditeternas definite genitive plural of <span class="searchmatch">perfiditet</span>...
perfiditetens definite genitive singular of <span class="searchmatch">perfiditet</span>...
perfiditeters indefinite genitive plural of <span class="searchmatch">perfiditet</span>...
obscenitet opacitet optimalitet originalitet parallellitet passivitet <span class="searchmatch">perfiditet</span> periodicitet permeabilitet perversitet plasticitet pluralitet popularitet...
troløs, falsk; vildledende, manipulerende, fordrejende, forvrænget, lumsk <span class="searchmatch">perfiditet</span> “perfid” in Den Danske Ordbog Borrowed from Viennese German perfid, from...