speculator

Từ điển WordNet v3.1 - WordNet Dictionary

noun

1. someone who makes conjectures without knowing the facts
• Derivationally related forms:
speculate
• Hypernyms:
thinker
2. someone who risks losses for the possibility of considerable gains
• Syn:
plunger
• Derivationally related forms:
speculate
• Hypernyms:
adventurer, venturer, gambler
• Hyponyms:
hedger, operator, scalper, venture capitalist