Spongy ground refers to soft, wet and yielding earth which can make walking or running more challenging. Some synonyms for spongy ground include squishy terrain, marshy land, boggy soil, mucky earth, and soft mud. Other alternatives for spongy ground could be soggy ground, swamp-like ground, or waterlogged terrain. When dealing with spongy ground, it is essential to be careful while walking as it can be treacherous and unstable. To avoid slipping or getting stuck, one can wear proper shoes or boots suitable for such surfaces. Being cautious while traversing spongy ground can prevent unwanted accidents and injuries.