/ ˈspekjələtɪv; NAmE ; NAmE also ˈspekjəleɪtɪv/ adjective
1.
based on guessing or on opinions that have been formed without knowing all the facts
2.
showing that you are trying to guess sth :
She cast a speculative look at Kate.
3.
( of business activity ) done in the hope of making a profit but involving the risk of losing money
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WORD ORIGIN
late Middle English : from Old French speculatif , -ive or late Latin speculativus , from the verb speculari , from specula watchtower, from specere to look.