The phrase "fundamental change" means a big and basic transformation or alteration in something, which could significantly impact its structure, principles, or core elements. Full definition
The impacts of motherhood will result in fundamental changes in your wife over a short time period. (dadsadventure.com)
The problem is the system they work in is outdated and in need of fundamental change. (mystudentvoices.com)
This report calls for fundamental changes in curriculum, assessment, and policy to ensure equity among students regardless of socioeconomic status. (studentsatthecenterhub.org)