The idiom "bet one's bottom dollar" means to be completely sure or confident about something. It is often used to express certainty or confidence in a particular outcome or situation.
For example, if someone says "I bet my bottom dollar that it will rain tomorrow," it means they are absolutely sure that it will rain.
The phrase "bottom dollar" refers to the last dollar someone has, which is often considered the most valuable or important. So, when someone says they are willing to bet their bottom dollar on something, it means they are willing to risk everything they have because they are so confident in their prediction.
Overall, this idiom is used to emphasize the speaker's confidence in a particular situation or outcome. It is often used in informal conversations and is a common phrase in American English.
• I would bet my bottom dollar that he will win the election.
• You can bet your bottom dollar that the stock market will crash if the government doesn't intervene.
• I can bet my bottom dollar that the sun will rise tomorrow.
• I bet my bottom dollar that she will be late again.
• I bet my bottom dollar that she is lying to us.
• You can bet your bottom dollar that the company will make a profit this quarter.