If you're feeling lazy and want to relax for a while, there are many ways to describe it beyond just "lounge around". You could say you're "taking it easy", "kicking back", "chilling out", or "lazing around". You might also "hang out", "loaf", or "dawdle". If you're enjoying a day off, you might "nap", "rest", or "unwind". Some people prefer to "veg out" or "zone out", while others "loll" or "languish". Whatever synonym you choose, taking a break and enjoying some down time is important for your mental and physical wellbeing.