Speculative describes very risky and unproven ideas or chances. You might have great ideas about starting your own business but your plans are speculative until you earn money from them.

Speculative describes abstract ideas — usually with high risk — that often come with excitement and expectation too. A speculative investment could mean putting lots of cash into a business or real estate property hoping it will make money later. Anything speculative is based on prediction: whatever it is hasn't happened yet.

Definitions of speculative

adj not based on fact or investigation

speculative knowledge”
theoretic, theoretical
concerned primarily with theories or hypotheses rather than practical considerations

adj showing curiosity

“raised a speculative eyebrow”
inquisitive, questioning, wondering
eager to investigate and learn or learn more (sometimes about others' concerns)

adj not financially safe or secure

speculative business enterprises”
bad, high-risk, risky
not sound financially

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