in an obvious and provable manner; his documentary sources are demonstrably wrong
[ Syn: demonstrably , demonstrably , incontrovertibly , incontrovertibly , demonstrably , demonstrably , incontrovertibly , incontrovertibly , demonstrably , demonstrably , incontrovertibly , incontrovertibly , demonstrably , demonstrably , incontrovertibly , incontrovertibly ]