"dilutes" in the verb sense
1. dilute, thin, thin out, reduce, cut
lessen the strength or flavor of a solution or mixture
"cut bourbon"
2. load, adulterate, stretch, dilute, debase
corrupt, debase, or make impure by adding a foreign or inferior substance often by replacing valuable ingredients with inferior ones
"adulterate liquor"
Source: WordNet® (An amazing lexical database of English)
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