gut-busting

gut-busting

1. Very difficult or tiring. Boy, moving all that furniture was gut-busting work—I'm exhausted. I'm not looking for some gut-busting workout, so I think I'm just going to take a gentle yoga class.2. Focused on reducing the size of one's stomach (or "gut"). I definitely need some gut-busting exercises before bikini season rolls around.3. Describing food that is in some way very unhealthy. You can always count on Aunt Mary to bring some cheesy, buttery, basically gut-busting, casserole to Thanksgiving dinner.