Fundamental is defined as something that is basic or essential.
Of, being, or serving as a starting point or basis:
The first in a group or series.
Relating to or occurring on or near the surface of the earth.
(Bot.) Growing from the base of a stem
Being the source from which a copy, reproduction, or translation is made.
Find another word for foundational. In this page you can discover 16 synonyms, antonyms, idiomatic expressions, and related words for foundational, like: fundamental, basic, primary, metaphysic, underlying, hermeneutic, hermeneutics, trinitarian, hermeneutical, theological and thomistic.