Refreeze is a term that refers to the process of freezing something again after it has been thawed. However, there are many other words that can be used to convey the same meaning. Some synonyms for refreeze include re-solidify, re-freeze, re-harden, re-chill, and re-stiffen. These words can be used interchangeably in contexts where something needs to be put back into a frozen state. Whether you're freezing leftovers or trying to preserve food for later use, refreeze is just one of many words at your disposal to describe the process of re-freezing something.