Dilute (verb)

1. Make (a liquid) thinner or weaker by adding water or another solvent to it.
2. Reduce the strength, value, or effectiveness of something by diluting it.
3. Lessen the concentration or effect of something by mixing it with something else.

Origin:

Late 16th century: from latin dilut- "washed away", from the verb diluere, from dis- "away" + lavere "wash".

Examples:

1. He diluted the juice with water.
2. The proposal was diluted before it was presented to the committee.
3. The solution was diluted to the desired concentration.
4. The impact of the news was diluted by the other events of the day.
5. The effect of the medication was diluted by the food he ate.