speculative
adjective /ˈspekjələtɪv/
  /ˈspekjələtɪv/,  /ˈspekjəleɪtɪv/
 - based on guessing or on opinions that have been formed without knowing all the facts推测的;猜测的;推断的 - The report is highly speculative and should be ignored.这个报道推测的成分很大,应该不予理会。 
 
- The report is highly speculative and should be ignored.
- showing that you are trying to guess something揣摩的;忖度的;试探的 - She cast a speculative look at Kate.她带着疑问的眼神看了凯特一眼。 
 
- She cast a speculative look at Kate.
- (of business activity商业活动 投机性的;风险性的 - speculative investment有风险的投资 
 
- speculative investment
词源late Middle English: from Old French speculatif, -ive or late Latin speculativus, from the verb speculari, from specula ‘watchtower’, from specere ‘to look’.