speculation
//ˌspɛkjʊˈleɪʃən//
Noun
speculationSingular
speculationsPlural
1
The forming of a theory or conjecture without firm evidence.
There is much speculation about the cause of the accident.
2
Investment in stocks, property, or other ventures in the hope of gain but with the risk of loss.
He lost a lot of money through speculation in the stock market.