<span class="searchmatch">fidēiussōribus</span> dative/ablative plural of fidēiussor...
fidēiussōrum dative fidēiussōrī <span class="searchmatch">fidēiussōribus</span> accusative fidēiussōrem fidēiussōrēs ablative fidēiussōre <span class="searchmatch">fidēiussōribus</span> vocative fidēiussor fidēiussōrēs...