uncertain

Adjective

• ambiguous (especially in the negative)
  • she spoke in no uncertain terms
    

• not consistent or dependable
  • an uncertain recollection of events
    
  • a gun with a rather uncertain trigger
    

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

• not certain to occur; not inevitable
  • everything is uncertain about the army
    
  • the issue is uncertain
    

• not established or confirmed
  • his doom is as yet unsealed
    

• 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
    

• 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
    

Related words

• Synonyms: 
  changeable , unsettled , unsealed , unsure , incertain
• Antonyms: 
  certain , sure , sealed , certain(p)