Jun 14, 2026 · The meaning of FUNDAMENTAL is serving as a basis supporting existence or determining essential structure or function : basic. How to use fundamental in a sentence. Synonym …

FUNDAMENTAL definition: 1. forming the base, from which everything else develops: 2. more important than anything else…. Learn more.

FUNDAMENTAL definition: serving as, or being an essential part of, a foundation or basis; basic; underlying. See examples of fundamental used in a sentence.

Jun 14, 2026 · The simple definition of FUNDAMENTAL is forming or relating to the most important part of something : basic —often + to.

7 meanings: 1. of, involving, or comprising a foundation; basic 2. of, involving, or comprising a source; primary 3. music.... Click for more definitions.

FUNDAMENTAL meaning: 1. forming the base, from which everything else develops: 2. more important than anything else…. Learn more.

fundamental, adj. & n. meanings, etymology, pronunciation and more in the Oxford English Dictionary

underlying: fundamental principles; the fundamental structure. of, pertaining to, or affecting the foundation or basis: a fundamental revision. being an original or primary source: a fundamental idea. …

7 senses: 1. of, involving, or comprising a foundation; basic 2. of, involving, or comprising a source; primary 3. music.... Click for more definitions.

Learn what fundamental means with clear definitions, pronunciation, synonyms, and real-world examples. Simple explanations to help you use fundamental correctly.