thin down
【他動】

1. attenuate（液体・気体などの濃度を）
2. cut（ウイスキーなど）
3. dilute（液体を）
4. load〈話〉（酒などを）
5. rarefy
6. rarify
7. reduce（ペンキなどを溶剤で）
8. weaken（飲み物の濃さを）

【形】

attenuant（液体・気体などの濃度を）

dilution

dilute by adding

dilute the concentration of

mix ~ with water

blur one's past image

（1） Bismuth salts, dissolved in a slight excess of hydrochloric acid, yield a white turbidity upon dilution with water.〔【出典】第十六改正日本薬局方（平成23年3月24日　厚生労働省告示第65号）〕

（1） When primary antimony salts are dissolved in a slight excess of hydrochloric acid for the test and then diluted with water, a white turbidity is produced.〔【出典】第十六改正日本薬局方（平成23年3月24日　厚生労働省告示第65号）〕

dilute by __%

There are many foreigners who think that watering down whisky affects the taste; however, Japanese do not have the constitution to drink strong alcohol straight so they do not drink that way.〔【出典】『これがうまい』（ひらがなタイムズ編）◆【出版社】株式会社ヤック企画 〕"YA06-031", "2516381"

These were Aboriginal children who were taken from their families in an attempt to dilute indigenous culture."VOA-A150", "2523093"

This paint needs to be diluted with a thinner before use.

put as much water as there is whiskey

dilute whisky with water

water down the milk

dilute wine with water

He managed to blur his past image as a tall talker.

thin ~ with extra milk

make secretions thinner

be meant to be diluted with either water or milk

thin paint with water

weaken consumers' incentive to spend before it expires

dilute an infusion

adulterate milk with water

dilute the stomach bile

thin the blood

adulterate alcoholic beverages with water