gloss over
gloss over {v.}
To try to make what is wrong or bad seem right or not important; try to make a thing look easy; pretend about; hide.
Billy broke a window and Mother tried to gloss it over by saying it wouldn't cost much to have it fixed, but Father spanked Billy anyway.
John glossed over his mistake by saying that everybody did the same thing.
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Source: A Dictionary of American Idioms
