Main entry: speculation, meditation
Definition: continuous and profound contemplation or musing on a subject or series of subjects of a deep or abstruse nature
Usage: the habit of meditation is the basis for all real knowledge
Main entry: speculation, conjecture
Definition: a hypothesis that has been formed by speculating or conjecturing (usually with little hard evidence)
Usage: speculations about the outcome of the election; he dismissed it as mere conjecture
Main entry: supposition, surmisal, surmise, hypothesis, guess, speculation, conjecture
Definition: a message expressing an opinion based on incomplete evidence
Main entry: venture, speculation
Definition: an investment that is very risky but could yield great profits
Usage: he knew the stock was a speculation when he bought it