Use to express a desire for complete change, leaving nothing of the old ways. The company needs a root and branch reform to survive the tech revolution.
Pro Tip 2/3
Deep Changes
Implies changes are needed to the very core or origins of something. The root and branch overhaul of the curriculum was long overdue.
Pro Tip 3/3
Not Surface-level
Suggests that superficial fixes are not enough; comprehensive work is needed. After the scandal, a root and branch review of corporate ethics was initiated.