The term 'clean house' can be broken down into four crossword solutions: SWEEP (5 letters), rehab (5 letters), VACUUM (6 letters), and DUST (4 letters). Sweeping is the act of using a broom to remove dirt and debris from a surface. Rehab is short for rehabilitation, which is the process of restoring something to its original condition. Vacuuming is the act of using a VACUUM cleaner to remove dirt and debris from a surface. Dusting is the act of using a cloth or duster to remove DUST from a surface. All of these activities are necessary to keep a house clean.