Open English Wordnet
Nouns
(n)fundamentalany 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”
Adjectives
(s)fundamental, rudimentary, underlyingbeing or involving basic facts or principles“the fundamental laws of the universe”, “a fundamental incompatibility between them”, “these rudimentary truths”, “underlying principles”
(s)fundamental, profoundfar-reaching and thoroughgoing in effect especially on the nature of something“the fundamental revolution in human values that has occurred”, “the book underwent fundamental changes”, “committed the fundamental error of confusing spending with extravagance”, “profound social changes”