Synonyms for uncertain

Adjective

1. uncertain (vs. certain), unsure (vs. sure), incertain, ambivalent, doubtful, dubious, groping, hesitant

usage: 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"

2. uncertain (vs. certain), indefinite, up in the air, indeterminate#1, undetermined

usage: 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"

3. unsealed (vs. sealed), uncertain

usage: not established or confirmed; "his doom is as yet unsealed"

4. uncertain, insecure (vs. secure)

usage: not firm or secure; "balancing three boxes in an uncertain pile"

5. uncertain (vs. certain), chancy, fluky, flukey, iffy, contingent, up in the air, unpredictable

usage: not certain to occur; not inevitable; "everything is uncertain about the army"; "the issue is uncertain"

6. changeable, uncertain, unsettled, variable (vs. invariable)

usage: subject to change; "a changeable climate"; "the weather is uncertain"; "unsettled weather with rain and hail and sunshine coming one right after the other"

7. uncertain, unsure, insecure (vs. secure), unsafe

usage: not safe from danger or mishap; "faced an uncertain future"; "an unsure existence"

8. uncertain, unreliable (vs. reliable), undependable (vs. dependable)

usage: not consistent or dependable; "an uncertain recollection of events"; "a gun with a rather uncertain trigger"

9. uncertain, ambiguous (vs. unambiguous)

usage: ambiguous (especially in the negative); "she spoke in no uncertain terms"