to be a condition or requirement that is uncertain or potentially challenging to fulfill

a story that seems impossible, particularly one that is used as an excuse

used to tell someone that one cannot take their statement or suggestion seriously

used to express anger and the fact that someone does not care about someone or something

used to emphasize the fact that someone's expectations or wishes are very unlikely to be fulfilled

used to say that one does not think that something will ever happen or has any chance of being true

to think about unlikely and unrealistic possibilities

used to refer to something that exceeds one's expectations in such ways that makes it hard to believe

an attempt made without having any high hopes of achieving success

if all the other options prove fruitless

a treasure or large sum of money that is impossible or extremely hard to obtain

used to refer to something that is extremely desirable yet nearly impossible to obtain

a promise of something good or desirable that will never be fulfilled

to aim for goals that are unrealistic or extremely difficult to achieve

used to express one's disbelief about something happening or being true

an impractical or impossible idea, plan, or wish

the slightest chance of succeeding or happening

to have hopes or ideas that are impractical or impossible

to make promises that are impossible to be fulfilled or be kept

to have no desire or intention to return to past circumstances