Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun speculator

2 senses of speculator

Sense 1
speculator -- (someone who makes conjectures without knowing the facts)
       => thinker -- (someone who exercises the mind (usually in an effort to reach a decision))

Sense 2
speculator, plunger -- (someone who risks losses for the possibility of considerable gains)
       => adventurer, venturer -- (a person who enjoys taking risks)
       => gambler -- (a person who wagers money on the outcome of games or sporting events)