1 abstract, academic, conjectural, hypothetical, notional, suppositional, tentative, theoretical
2 chancy (informal) dicey (informal, chiefly Brit.) hazardous, risky, uncertain, unpredictable
English Collins Dictionary - English synonyms & Thesaurus
1 adj A piece of information that is speculative is based on guesses rather than knowledge.
The papers ran speculative stories about the mysterious disappearance of Eddie Donagan...
2 adj Someone who has a speculative expression seems to be trying to guess something about a person or thing.
His mother regarded him with a speculative eye.
3 adj Speculative is used to describe activities which involve buying goods or shares, or buildings and properties, in the hope of being able to sell them again at a higher price and make a profit.
Thousands of pensioners were persuaded to mortgage their homes to invest in speculative bonds...
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