"The mistake was to think you could speculate with the anguish of young people."

"I had thought your father might have speculated with you?"

It is difficult to speculate on the discrepancies with previously published studies.

It is difficult at this point to speculate on the metabolism of the entire class with the limited sample size.

They do speculate on her age, with guesses ranging from about 30 to maybe 45.

Maybe I just don't fully understand markets but do we have to let people speculate with the price of food?

Peter speculates with George about evidence of intelligent dark matter life moving through earth.

It is intriguing to speculate on the lyric of the young girl in love with one whose name she would not tell.

He said he'd like to speculate with it, but I wouldn't let him.

I wasn't going to speculate with all these ears around.