dilute
verb (used with object)
to make (a liquid) thinner or weaker by the addition of water or the like.
Used to describe an action that began in the past, has continued continuously, and is still in progress.
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
Don't forget the milk: Peter Hughes's parents have been diluting their milk for years.
From BBC ● Mar. 18, 2014