形容词
1. (信息)推测性的，猜测性的
A piece of information that is speculative is based on guesses rather than knowledge.
2. (表情)带着疑问的，好奇的
Someone who has a speculative expression seems to be trying to guess something about a person or thing.
1. showing curiosity
e.g. if someone saw a man climbing a light post they might get inquisitive
raised a speculative eyebrow
Synonym: inquisitivequestioningwondering(a)
2. not based on fact or investigation
e.g. a notional figure of cost helps in determining production costs
speculative knowledge
Synonym: notional
3. not financially safe or secure
e.g. a bad investment
high risk investments
anything that promises to pay too much can't help being risky
speculative business enterprises