speculative
/ˈspekjʊlətɪv/adjective
1
- engaged in, expressing, or based on conjecture rather than knowledge推测的, 猜想的：
he gave her a speculative glance.
他向她投去狐疑的一瞥。
2
- (of an investment) involving a high risk of loss（投资）冒风险的
2.1
- (of a business venture) undertaken on the chance of success, without a pre-existing contract（生意上）投机的。
派生词