uncertain meaning and definition

UNCERTAIN adjective

Definition of uncertain (adjective)

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"
   • synonyms: incertain, unsure
   • antonym: certain
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 consequences"; "without further evidence his story must remain uncertain"
   • antonym: certain
3. not established or confirmed
   • "his doom is as yet unsealed"
   • synonyms: unsealed
   • antonym: certain
4. not certain to occur; not inevitable
   • "everything is uncertain about the army"; "the issue is uncertain"
   • antonym: certain
5. subject to change
   • "a changeable climate"; "the weather is uncertain"; "unsettled weather with rain and hail and sunshine coming one right after the other"
   • synonyms: changeable, unsettled
6. not consistent or dependable
   • "an uncertain recollection of events"; "a gun with a rather uncertain trigger"
7. ambiguous (especially in the negative)
   • "she spoke in no uncertain terms"