Actually you can as long as its not at the point it was going bad if not cooked. I often partially thaw something to the point I can cut it or break apart. Then put right back in freezer. If something is good for 5 days from the time it’s thawed till cooked and you leave it out 3 days. Then refreeze and thaw again… the second time , I figure it has only 2 days left. It will change flavor and texture on some things though. And generally not in a good way. Lol