speculate
verb [ I ]
uk/ˈspekjəleɪt/ usto guess possible answers to a question when you do not have enough information to be certain:
speculate on/about sth Journalists are speculating about whether interest rates will be cut.
A spokesperson declined to speculate on the date of the merger.
speculate that Currency traders speculated that Japan's central bank might soon buy large amounts of dollars in the hope of preventing the yen from strengthening further
FINANCE
to buy something hoping that its value will increase and then sell at this higher price in order to make a profit:
speculate on/in sth He made his money speculating on the London gold and silver markets.
The company speculates in property.