fundamentally Definition

fundamental
adj

1. Basic; underlying.

Example: fundamental rules of physics
Example: her fundamental honesty
Thesaurus: basic, rudimentary, elementary, essential, first, principal, key, central, primary.
2. Large; important.

Example: fundamental differences
3. Essential; necessary.

Thesaurus: vital, necessary, essential, important, crucial, key, central.

noun

1. A basic principle or rule.

Thesaurus: first principle, element, rudiment, practicality; basics, essentials, foundation, cornerstone; brass tacks, nitty-gritty (slang).
Form: fundamentals (usually)
2. music.
The lowest note of a chord.

Derivative: fundamentality
noun

Derivative: fundamentally
adverb

Basically; essentially
Thesaurus: basically, essentially, primarily, at heart, intrinsically, centrally, radically.

Etymology: 15c: from Latin fundamentum foundation, from fundare to found¹.