speculative

Adjective

• showing curiosity
  • if someone saw a man climbing a light post they might get inquisitive
    
  • raised a speculative eyebrow
    

• not based on fact or investigation
  • a notional figure of cost helps in determining production costs
    
  • speculative knowledge
    

• not financially safe or secure
  • a bad investment
    
  • high risk investments
    
  • anything that promises to pay too much can't help being risky
    
  • speculative business enterprises
    

Related words

• Synonyms: 
  inquisitive , questioning , wondering(a) , notional , bad , risky , high-risk