is the saying to flesh something out or flush
Flesh out and flush out are both English expressions, but they mean different things. So donât feel bad if you donât always know which one to use. When you are developing a projectâputting more meat on its bones, so to speakâyou are fleshing it out. To flesh out is to expand something or build it up. Let's flesh out this proposal and make it more meaty. We need an all-day meeting to flesh out these ideas. Flush Out. When you shoo a flock of birds out of hiding, you are flushing them out. Flush out is also a metaphor for revealing things or clearing them out.