Definition of fundamentally
: with regard to what is basic, essential, or fundamental : at a fundamental level
- a fundamentally honest person
- a fundamentally new/different approach
- Most theories of the internal structure of Venus begin with the assumption that the planet is fundamentally similar to the earth …
- —Andrew and Louise Young
- This "disposable" work force is the most important trend in business today, and it is fundamentally changing the relationship between Americans and their jobs.
- —Janice Castro
