Source : WordNet®

unsecured
     adj 1: not firmly fastened or secured; "an unbarred door"; "went
            through the unlatched gate into the street"; "an
            unlocked room" [syn: {unbarred}, {unbolted}, {unlatched},
             {unlocked}]
     2: without financial security; "an unsecured note" [syn: {unguaranteed}]