形容詞 speculative:

1. not financially safe or secure
   同義詞：bad, risky, high-risk
2. not based on fact or investigation
   同義詞：notional
3. showing curiosity
   同義詞：inquisitive, questioning, wondering

1. Based on speculative or abstract reasoning.
   哲學上的，理論上的建立在思辯或抽象的推論之上的
2. A speculative monopoly of a stock or commodity created by purchasing all or most of the available supply in order to raise its price.
   壟斷通過購買所有的或大部分的可獲得的供應品以期提高其價格，而對股票或商品的一種投機的控制
3. His conclusions are purely speculative.
   他的結論完全是推測而來的。
4. Their speculative buying of grain is illegal.
   他們投機購買谷物是不合法的。