(noun, adjective)


1. serving as an essential component

- an example that was fundamental to the argument

- computers are fundamental to modern industrial structure

Similar word(s): important, cardinal, central, key, primal

2. being or involving basic facts or principles

- the fundamental laws of the universe

- a fundamental incompatibility between them

Similar word(s): basic, rudimentary, underlying

3. related the most important part of something; the essence.

- the fundamental revolution in human values that has occurred

- the book underwent fundamental changes

- committed the fundamental error of confusing spending with extravagance

Similar word(s): important, significant, profound

Sentences with fundamental as an adjective:

- a fundamental truth;

- A need for belonging seems fundamental to humans.


1. any factor that could be considered important to the understanding of a particular business

- fundamentals include a company's growth, revenues, earnings, management, and capital structure

Definition categories: event, factor

2. the lowest tone of a harmonic series

Definition categories: thought, harmonic