The phrase "hit the skids" refers to a sudden decline or failure. However, this expression can be replaced by synonymous phrases to add variety to your writing or conversation. Some possible replacements for "hit the skids" include "fall apart," "go downhill," "lose momentum," "crash and burn," "go off the rails," or "take a nosedive." All of these phrases convey the sense of a sudden and dramatic reversal of fortunes, which can be applied to a wide range of situations, from personal relationships to business ventures, sports teams, and more. So, the next time you want to describe a downfall, consider using one of these alternative phrases instead of "hit the skids".