blow (something) up out of proportion

blow (something) up out of proportion

To indicate, imply, or argue that something is more important or consequential than it really is; to overinflate the importance of something. Don't blow this up out of proportion, Bill—I was late due to traffic, and that's it. It's just a small inconvenience, don't blow it up out of proportion and make it sound like the end of the world.
See also: blow, of, out, proportion, up