Synonyms of 'cover-up'
concealmentDictionary, conspiracy, whitewash (informal)
He denied there'd been any cover-up of the fraud.
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Complicity is involvement with other people in an illegal activity or plan.
evidence of their complicity with international terrorists
An organization or activity that is a front for one that is illegal or secret is used to hide it.
a front for crime syndicates
Thesaurus for cover-up from the Collins English Thesaurus
If you cover something or someone up , you put something over them in order to protect or hide them.