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English definition of “speculation”

speculation

noun [C or U] (GUESS)    /ˌspek.jʊˈleɪ.ʃən/
C1 the activity of guessing possible answers to a question without having enough information to be certain : Rumours that they are about to marry have been dismissed as pure speculation. Speculation about his future plans is rife . [+ that] News of the president's illness fuelled / prompted speculation that an election will be held later in the year .Guesses and assumptions
(Definition of speculation noun (GUESS) from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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