spec·u·late 
/ˈspɛkjəˌleɪt/ verb
spec·u·lates; spec·u·lat·ed; spec·u·lat·ing /ˈspɛkjəˌleɪt/ verb 1 : to think about something and make guesses about it : to form ideas or theories about something usually when there are many things not known about it [no obj] ▪ She could only speculate about/on her friend's motives. ▪ He speculated as to whether she would come. ▪ We don't know what happened—we can only speculate. [+ obj] — + that ▪ Scientists speculate that the illness is caused by a virus. 2 [no obj] : to invest money in ways that could produce a large profit but that also involve a lot of risk
▪ speculating on the stock market
▪ speculating on the stock market
— spec·u·la·tor /ˈspɛkjəˌleɪtɚ/ noun, plural spec·u·la·tors [count]
▪ a land speculator ▪ a Wall Street speculator
/ˈspɛkjəˌleɪtɚ/ noun, plural spec·u·la·tors [count] ▪ a land speculator ▪ a Wall Street speculator
