CEFR C1
speculative
adjective
Meaning
Based on conjecture rather than knowledge, or involving a high risk of loss in the hope of considerable gain.
Examples
- The article presented a highly speculative theory about the origins of the universe, lacking concrete evidence.
- His investment in the new tech startup was purely speculative, as the company had no proven track record.
Synonyms: conjectural, hypothetical, risky, uncertain