Source : WordNet®

unprepared
     adj 1: without preparation; not prepared for; "unprepared remarks";
            "the shock was unprepared"; "our treaty makers
            approached their immensely difficult problems
            unprepared"- R.E.Danielson [ant: {prepared}]
     2: lacking with intellectual equipment; "unprepared to stand on
        his own feet"
     3: not put in a state of preparedness; "the machinery was
        unprepared for the extra load"