Nouns

(n)whitewasha defeat in which the losing person or team fails to score
(n)whitewashwash consisting of lime and size in water; used for whitening walls and other surfaces
(n)whitewasha specious or deceptive clearing that attempts to gloss over failings and defects

Verbs

(v)whitewash, gloss over, sleek over, hush upcover up a misdemeanor, fault, or error“Let's not whitewash the crimes of Stalin”, “She tried to gloss over her mistakes”
(v)whitewashcover with whitewash“whitewash walls”
(v)whitewashexonerate by means of a perfunctory investigation or through biased presentation of data