Db::setNotInSysCategoryConstraint() 

\nn\t3::Db()->setNotInSysCategoryConstraint($queryBuilder = NULL, $sysCategoryUids = [], $tableName = '', $categoryFieldName = 'categories'); 

Restrict constraint to records that are NOT in one of the specified categories. Opposite and alias to \nn\t3::Db()->setSysCategoryConstraint()

$queryBuilder = \nn\t3::Db()->getQueryBuilder( $table );
\nn\t3::Db()->setNotInSysCategoryConstraint( $queryBuilder, [1,3,4], 'tx_myext_tablename', 'categories' );

public function setNotInSysCategoryConstraint( &$queryBuilder = null, $sysCategoryUids = [], $tableName = '', $categoryFieldName = 'categories' )
{
	return $this->setSysCategoryConstraint( $queryBuilder, $sysCategoryUids, $tableName, $categoryFieldName, true );
}