uncertain
     adj 1: lacking or indicating lack of confidence or assurance;
            "uncertain of his convictions"; "unsure of himself and
            his future"; "moving with uncertain (or unsure)
            steps"; "an uncertain smile"; "touched the ornaments
            with uncertain fingers" [syn: {unsure}, {incertain}]
            [ant: {certain(p)}, {certain(p)}]
     2: not established beyond doubt; still undecided or unknown;
        "an uncertain future"; "a manuscript of uncertain origin";
        "plans are still uncertain"; "changes of great if
        uncertain consquences"; "without further evidence his
        story must remain uncertain" [ant: {certain(p)}]
     3: not established or confirmed; "his doom is as yet unsealed"
        [syn: {unsealed}] [ant: {sealed}]
     4: not firm or secure; "balancing three boxes in an uncertain
        pile"
     5: not certain to occur; not inevitable; "everything is
        uncertain about the army"; "the issue is uncertain" [ant:
        {certain}]
     6: subject to change; "a changeable climate"; "the weather is
        uncertain"; "unsettled weather with rain and hail and
        sunshine coming one right after the other" [syn: {changeable},
         {unsettled}]
     7: not safe from danger or mishap; "faced an uncertain future";
        "an unsure existence" [syn: {unsure}]
     8: not consistent or dependable; "an uncertain recollection of
        events"; "a gun with a rather uncertain trigger"
     9: ambiguous (especially in the negative); "she spoke in no
        uncertain terms"
Source: WordNet® 2.0