A lot of thesaurus - A little bit dictionary

'speculation'

Overview of noun speculation
1. guess, conjecture, supposition, surmise, surmisal, speculation, hypothesis -- (a message expressing an opinion based on incomplete evidence)

2. speculation, conjecture -- (a hypothesis that has been formed by speculating or conjecturing (usually with little hard evidence); "speculations about the outcome of the election"; "he dismissed it as mere conjecture")

3. speculation, venture -- (an investment that is very risky but could yield great profits; "he knew the stock was a speculation when he bought it")

4. meditation, speculation -- (continuous and profound contemplation or musing on a subject or series of subjects of a deep or abstruse nature; "the habit of meditation is the basis for all real knowledge")



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