Clean out is a commonly used phrasal verb that means to get rid of or dispose of unwanted or unnecessary things. However, there are various synonyms that can be used in place of clean out, such as clear out, declutter, purge, and empty out. Clear out refers to removing clutter or unwanted items from a space. Declutter means to remove unnecessary things that are taking up space. Purge is a more intense version of decluttering and involves getting rid of a significant amount of stuff. Finally, empty out means to remove everything from a space or container. All of these synonyms convey the same meaning as clean out and can be used interchangeably depending on the context.