To whiten with whitewash. (Merriam – Webster)
To gloss over or cover up (such as vices or crimes). (Merriam – Webster)
To exonerate by means of a perfunctory investigation or through biased presentation of data. (Merriam – Webster)
To hold (an opponent) scoreless in a game or contest. (Merriam – Webster)
A white liquid that is a mixture of lime or powdered chalk and water, used for making walls or ceilings white. (Cambridge Dictionary)
Whitewash is a mixture of lime or chalk and water that is used for painting walls white. (Collins Dictionary)
If a wall or building has been whitewashed, it has been painted white with whitewash. (Collins Dictionary)
If you say that people whitewash something, you are accusing them of hiding the unpleasant facts or truth about it in order to make it acceptable. (Collins Dictionary)
How to Whitewash Wood for a Vintage Look.
Use whitewash instead of paint for traditional look and no toxins.
Blacklist or whitewash? What a real EU blacklist of tax havens should look like.