certain
     adj 1: definite but not specified or identified; "set aside a
            certain sum each week"; "to a certain degree";
            "certain breeds do not make good pets"; "certain
            members have not paid their dues"; "a certain popular
            teacher"; "a certain Mrs. Jones" [syn: {certain(a)}]
     2: having or feeling no doubt or uncertainty; confident and
        assured; "felt certain of success"; "was sure (or certain)
        she had seen it"; "was very sure in his beliefs"; "sure of
        her friends" [syn: {certain(p)}, {sure}] [ant: {uncertain},
         {uncertain}]
     3: established beyond doubt or question; definitely known;
        "what is certain is that every effect must have a cause";
        "it is certain that they were on the bus"; "his fate is
        certain"; "the date for the invasion is certain" [syn: {certain(p)}]
        [ant: {uncertain}]
     4: certain to occur; destined or inevitable; "he was certain to
        fail"; "his fate is certain"; "In this life nothing is
        certain but death and taxes"- Benjamin Franklin; "he faced
        certain death"; "sudden but sure regret"; "he is sure to
        win" [syn: {sure}] [ant: {uncertain}]
     5: established irrevocably; "his fate is sealed" [syn: {sealed}]
        [ant: {unsealed}]
     6: capable of being depended on; "a quick and certain remedy";
        "a sure way to distinguish the two"; "wood dust is a sure
        sign of termites" [syn: {sure}]
     7: exercising or taking care great enough to bring assurance;
        "be certain to disconnect the iron when you are through";
        "be sure to lock the doors" [syn: {sure}]
Source: WordNet® 2.0