Tra từ speculation - Từ điển Oxford Advanced Learner 8th

specu·la·tion [speculation speculations] BrE [ˌspekjuˈleɪʃn] NAmE [ˌspekjuˈleɪʃn] noun
1. uncountable, countable the act of forming opinions about what has happened or what might happen without knowing all the facts
•~ (that…) There was widespread speculation that she was going to resign.
•His private life is the subject of much speculation.
•~ (about/over sth) Today's announcement ends months of speculation about the company's future.
•The president's absence led to speculation over his health.
•She dismissed the newspaper reports as pure speculation.
•Our speculations proved right.
2. uncountable, countable ~ (in sth) the activity of buying and selling goods or shares in a company in the hope of making a profit, but with the risk of losing money
•speculation in oil

Thesaurus:
speculation noun U, C
•His private life is the subject of much speculation.
conjecture • • guesswork • • guess • • assumption • • presumption • |formal, often disapproving presupposition •
speculation/conjecture/guesswork/a guess/an assumption/a presumption/a presupposition about sth
speculation/the conjecture/a guess/the assumption/the presumption/the presupposition that…
pure/sheer speculation/conjecture/guesswork

Example Bank:
•He was dropped from the team amid speculation that he was sick.
•Much speculation surrounds his role in the crisis.
•Speculation is mounting that a new tax will be introduced.
•Speculation was rife as to who would be chosen as a successor.
•Speculation was rife as to whom the prince might marry.
•There has been a lot of speculation linking the defender with a move to Chelsea.
•There has been increasing speculation over the company's future.
•There was wild speculation among the students as to the reason for cancelling the lecture.
•This is just speculation on my part.
•This issue has attracted a great deal of speculation among economists.
•Whether or not he will get the job is mere speculation.
•With a lack of credible answers, speculation is running rampant.
•amateur speculation based on questionable assumptions
•speculation against the euro
•speculation on the stock market
•Our speculations proved correct.
•She dismissed the newspaper report as pure speculation.
•Speculation was rife that he was having an affair.
•The visit fuelled speculation about a major arms deal between the two countries.
•There has been intense media speculation over the past few days.
•Today's announcement ends months of speculation about the company's future.