"On the skid" typically means experiencing a downturn or facing financial troubles. The antonyms for this phrase could be "thriving," "prosperous," "successful," or "flourishing." These words signify a state of growth and stability in a person's financial situation. Other antonyms could include "stable," "secure," "reliable," or "solvent." These words indicate a situation where there is little or no risk of suffering financial problems. When discussing a person or organization that is "on the skid," it's helpful to consider the antonyms and imagine what a positive or stable financial state might look like instead.