fatal


fatal (http://definr.com/fatal)

     adj 1: bringing death [ant: nonfatal]
     2: having momentous consequences; of decisive importance; "that
        fateful meeting of the U.N. when...it declared war on
        North Korea"- Saturday Rev; "the fatal day of the election
        finally arrived" [syn: fateful]
     3: (of events) having extremely unfortunate or dire
        consequences; bringing ruin; "the stock market crashed on
        Black Friday"; "a calamitous defeat"; "the battle was a
        disastrous end to a disastrous campaign"; "such doctrines,
        if true, would be absolutely fatal to my theory"- Charles
        Darwin; "it is fatal to enter any war without the will to
        win it"- Douglas MacArthur; "a fateful error" [syn: black,
         calamitous, disastrous, fateful]
     4: controlled or decreed by fate; predetermined; "a fatal
        series of events" [syn: fateful]