incertain

Adjective

• 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: 
  uncertain , unsure
• Antonyms: 
  certain(p) , sure