This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

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n. One that speculates: a commodities speculator; a speculator regarding the future turn of events.

n. One who speculates; an observer; a contemplator.

n. One who forms theories; a theorist.

n. One who speculates; as in investing, one who is willing to take volatile risks upon invested principle for the potential of substantial returns.

n. One who speculates. Specifically: (a) An observer; a contemplator; hence, a spy; a watcher.

n. One who forms theories; a theorist.

n. One who engages in speculation; one who buys and sells goods, land, etc., with the expectation of deriving profit from fluctuations in price.

n. An observer or onlooker; a watcher; a lookout; a seer; in a specific use, an occult seer; one who looks into mysteries or secrete by magical means.

n. One who engages in mental speculation; a person who speculates about a subject or subjects; a theorizer.

n. One who practises speculation in trade or business of any kind. See speculation, 4.

n. someone who risks losses for the possibility of considerable gains

n. someone who makes conjectures without knowing the facts

"The word "speculator" comes from the Latin word "specula" (watchtower) and indicates someone who tries to "look far away" and thus metaphorically "look ahead", in other words to foresee future events."

thinker   

reasoner    entrepreneur    gambler    punter   

contemplator    watcher    theorist    bear    lamb    lame duck    long    short    bulla   

adventurer    financier    trader    investor    entrepreneur    broker    capitalist    gambler    promoter    journalist