1. to form theories or guesses about something without having complete information
2. to invest in stocks, property, or other ventures in the hope of gain but with the risk of loss
Usage: financial

Examples

• The scientist speculates that the new discovery could lead to better treatments.
• She speculates about what might have caused the ancient civilization to disappear.
• The reporter speculates on the outcome of tomorrow’s election.
• He speculates in real estate, buying properties he thinks will increase in value.
• Many investors speculate in cryptocurrency despite the high risks.
• The detective speculates that the suspect had inside knowledge of the building.
• Without more evidence, we can only speculate about their true motives.