spec·u·la·tive /ˈspɛkjələtɪv, ˌle-/
 (a.)思索性的,投機的,推理的


 Spec·u·la·tive a.
 1. Given to speculation; contemplative.
    The mind of man being by nature speculative.   --Hooker.
 2. Involving, or formed by, speculation; ideal; theoretical; not established by demonstration.
 3. Of or pertaining to vision; also, prying; inquisitive; curious. [R.]
 4. Of or pertaining to speculation in land, goods, shares, etc.; as, a speculative dealer or enterprise.
    The speculative merchant exercises no one regular, established, or well-known branch of business.   --A. Smith.
 -- Spec*u*la*tive*ly, adv. -- Spec*u*la*tive*ness, n.

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 speculative
      adj 1: not financially safe or secure; "a bad investment"; "high
             risk investments"; "anything that promises to pay too
             much can't help being risky"; "speculative business
             enterprises" [syn: bad, insecure, risky, high-risk]
      2: not based on fact or investigation; "a notional figure of
         cost helps in determining production costs"; "speculative
         knowledge" [syn: notional]
      3: showing curiosity; "if someone saw a man climbing a light
         post they might get inquisitive"; "raised a speculative
         eyebrow" [syn: inquisitive, questioning, wondering(a)]