water down

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• verb To dilute; to add water
• verb idiomatic To make weaker.
• verb idiomatic To simplify or oversimplify; to make easier; to make less difficult.
• verb idiomatic To make less restrictive; to make more lenient.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• verb thin by adding water to
• verb make less strong or intense