Tự biện; suy xét, nghiên cứu

to speculate on (upon, about) a subject

nghiên cứu một vấn đề

Đầu cơ, tích trữ; mua bán liều lĩnh

to speculate in something

đầu cơ cái gì

đầu cơ

đầu cơ

đầu cơ chứng khoán

speculate in oils (to...)

đầu cơ chứng khoán dầu hỏa

Often, speculate on or upon or about or over. reflect (onor about or over), consider, muse (on or about or over),meditate (on or over or about), contemplate (on or about),cogitate (on or about), think (about or over or on), ponder(over or about), mull over, chew on or over, ruminate (on orover or about), wonder (about), deliberate (over or on orabout), weigh, judge, evaluate, theorize (on or about),conjecture (on or about), postulate, hypothesize: I have beenspeculating about whether I should take a holiday in theAlgarve. Why not go and enjoy yourself instead of speculating onthe world's injustices? 2 gamble, wager, take a chance, Colloqhave a flutter, play the market, take a plunge: She is tooconservative to speculate in the stock market.

Intr. (usu. foll. by on, upon, about) form a theory orconjecture, esp. without a firm factual basis; meditate(speculated on their prospects).

Tr. (foll. by that, how,etc. + clause) conjecture, consider (speculated how he mightachieve it).

Intr. a invest in stocks etc. in the hope ofgain but with the possibility of loss. b gamble recklessly.

Speculator n. [L speculari spy out, observe f. speculawatch-tower f. specere look]