uncertain
1. [ adjective ] lacking or indicating lack of confidence or assurance
Synonyms: incertain unsure
Examples:

"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"

Related terms: certain certain doubtful ambivalent groping assurance certainty
2. [ adjective ] not established beyond doubt; still undecided or unknown
Examples:

"an uncertain future" "a manuscript of uncertain origin" "plans are still uncertain" "changes of great if uncertain consequences" "without further evidence his story must remain uncertain"

Related terms: certain up_in_the_air indefinite indeterminate certainty
3. [ adjective ] not firm or secure
Examples:

"balancing three boxes in an uncertain pile"

Related terms: insecure
4. [ adjective ] subject to change
Synonyms: unsettled changeable
Examples:

"a changeable climate" "the weather is uncertain" "unsettled weather with rain and hail and sunshine coming one right after the other"

Related terms: variable
5. [ adjective ] not consistent or dependable
Examples:

"an uncertain recollection of events" "a gun with a rather uncertain trigger"

Related terms: unreliable
6. [ adjective ] not certain to occur; not inevitable
Examples:

"everything is uncertain about the army" "the issue is uncertain"

Related terms: certain chancy contingent up_in_the_air unpredictable
7. [ adjective ] not safe from danger or mishap
Synonyms: unsure
Examples:

"faced an uncertain future" "an unsure existence"

Related terms: insecure
8. [ adjective ] not established or confirmed
Synonyms: unsealed
Examples:

"his doom is as yet unsealed"

Related terms: sealed
9. [ adjective ] especially in the negative "no uncertain," as in "spoke in no uncertain terms"
Related terms: ambiguous
Similar spelling:   uncertainty
  uncertainly
  uncurtained
  unswerving
  unicorn
  unswervingly
  unassertive
  unscramble
  unscrew
  uncertified