Definition of speculative

• not financially safe or secure; "a bad investment"; "high risk investments"; "anything that promises to pay too much cant help being risky"; "speculative business enterprises"
• not based on fact or investigation; "a notional figure of cost helps in determining production costs"; "speculative knowledge"
• showing curiosity; "if someone saw a man climbing a light post they might get inquisitive"; "raised a speculative eyebrow"