Fundamentaj
Fundamentaj is the plural form of the Esperanto adjective fundamenta, meaning fundamental, foundational, or basic. It is used to describe plural nouns, as in fundamentaj ideoj (fundamental ideas) or fundamentaj principoj (fundamental principles). In Esperanto, adjectives agree with the nouns they modify in number and do not have gender; the singular form is fundamenta and the plural form is fundamentaj.
The word is built from the root fundament- (foundation) plus the adjectival suffix -a to form fundamenta,
In typical usage, fundamentaj denotes essential or core characteristics within a discussion of theory, science, philosophy,
When capitalized as Fundamentaj, it may appear as a proper noun or the name of a project,