My first thread after all these years looking in this forum. Congrats to the forum-users, but this time, I have a difficulty and I need to ask by myself. Even after several looks of internet, I've got troubles to understand the meaning of this idiom, and more precisely, when to use it. I got the fact that it means - more or less - that "almost" is not enough, but the situations when to use it is still not cristal clear for me. Could somebody enlighten me, give me examples? Thanks in advance!