<span class="searchmatch">perfidester</span> inflection of perfide: strong/mixed nominative masculine singular superlative degree strong genitive/dative feminine singular superlative...
nominative <span class="searchmatch">perfidester</span> perfideste perfidestes perfideste genitive perfidesten <span class="searchmatch">perfidester</span> perfidesten <span class="searchmatch">perfidester</span> dative perfidestem <span class="searchmatch">perfidester</span> perfidestem...