a world of (something)
A very large amount of something. I know the old house seems run down, but a thorough cleaning and a fresh coat of paint will make a world of difference. If you're feeling sad, getting out in the sunlight should do you a world of good. If you don't keep your financial accounts in order, you'll be in for a world of hurt when it's time to file your taxes.
Farlex Dictionary of Idioms. © 2024 Farlex, Inc, all rights reserved.