speculation

Noun

• continuous and profound contemplation or musing on a subject or series of subjects of a deep or abstruse nature
  • the habit of meditation is the basis for all real knowledge
    

• an investment that is very risky but could yield great profits
  • he knew the stock was a speculation when he bought it
    

• a hypothesis that has been formed by speculating or conjecturing (usually with little hard evidence)
  • speculations about the outcome of the election
    
  • he dismissed it as mere conjecture
    

• a message expressing an opinion based on incomplete evidence

Related words

• Synonyms: 
  meditation , venture , conjecture , guess , supposition , surmise , surmisal , hypothesis