v.
1.to believe especially on uncertain or tentative grounds
2.talk over conjecturally, or review in an idle or casual way and with an element of doubt or without sufficient reason to reach a conclusion
3.reflect deeply on a subject
4.invest at a risk
Idiom of the Day
let (someone) down or let down (someone)
to fail to do as well as expected, to disappoint someone
The boy let his parents down when he failed the university entrance exams.