The Collaborative International Dictionary
paper over
paper over \pa"per o"ver\ (p[=a]"p[~e]r*[=o]"v[~e]r), v. t. To ignore or conceal (a disagreement or dispute) so as to continue friendly or productive relations; as, to paper over differences.
Wiktionary
paper over
vb. (context transitive figurative English) To superficially hide or disguise (qualifier: a problem or a defect) without addressing it; to provide a veneer of normality or success.