whitewash

a defeat in which the losing person or team fails to score

wash consisting of lime and size in water; used for whitening walls and other surfaces

a specious or deceptive clearing that attempts to gloss over failings and defects

cover up a misdemeanor, fault, or error; "Let's not whitewash the crimes of Stalin"; "She tried to gloss over her mistakes"

cover with whitewash; "whitewash walls"

exonerate by means of a perfunctory investigation or through biased presentation of data