A speculator is someone who invests in something without really knowing what they're doing. They are often very risky, and they can lose a lot of money very quickly.
The speculator bought all of the stocks in the company, which is why the company is going bankrupt.
The speculator bought the house without really knowing anything about it, and now he's stuck with it.
noun
someone who risks losses for the possibility of considerable gains
Synonyms:
noun
someone who makes conjectures without knowing the facts
1
As of the moment, the reunion is speculation.
2
It is indecorous to speculate on these matters.
3
It is speculation on the part of the author.
4
That's a speculative remark, not a statement.
5
The above speculations are farfetched.
6
The town was sold to a speculator.
7
It is hardly the act of a speculator in a casino.
8
It is the rise and fall of the speculator market.
9
It was speculated that this was not the entire sum of the hoard.
10
It's just speculative on the part of the newspaper.