The term 'watering down' is a phrase used to describe the process of diluting a liquid, usually with water. Diluting is the act of making a solution weaker or less concentrated by adding more solvent, such as water. This process is often used to reduce the strength of a substance, such as alcohol, or to make a solution easier to use. The crossword solution for this term is 'diluting, ' which is an 8-letter word.