being or involving basic facts or principles
- "a fundamental incompatibility between them"
- "the fundamental laws of the universe"
- "computers are fundamental to modern industrial structure"
- "an example that was fundamental to the argument"
far-reaching and thoroughgoing in effect especially on the nature of something
- "committed the fundamental error of confusing spending with extravagance"
- "the book underwent fundamental changes"
- "the fundamental revolution in human values that has occurred"