existential

As adjectives the difference between fundamental and existential

is that fundamental is pertaining to the foundation or basis; serving for the foundation. Hence: Essential, as an element, principle, or law; important; original; elementary while existential is of, or relating to existence.

As a noun fundamental

is a leading or primary principle, rule, law, or article, which serves as the groundwork of a system; essential part, as, the fundamentals of linear algebra.

As adjectives the difference between speculative and existential

is that speculative is characterized by speculation; based on guessing or unfounded opinions while existential is of, or relating to existence.

Epistemological is a related term of existential.

As adjectives the difference between epistemological and existential

is that epistemological is of or pertaining to epistemology or theory of knowledge, as a field of study while existential is of, or relating to existence.

Intellectual is a related term of existential.

As adjectives the difference between intellectual and existential

is that intellectual is belonging to, or performed by, the intellect; mental or cognitive; as, intellectual powers, activities, etc while existential is of, or relating to existence.

As a noun intellectual

is an intelligent, learned person, especially one who discourses about learned matters.

Abstract is a related term of existential.

As a noun abstract

is abstract.

As an adjective existential is

of, or relating to existence.

Ultimate is a related term of existential.

As adjectives the difference between ultimate and existential

is that ultimate is final; last in a series while existential is of, or relating to existence.

As a noun ultimate

is the most basic or fundamental of a set of things.

Cosmological is a related term of existential.

As adjectives the difference between cosmological and existential

is that cosmological is of or pertaining to cosmology, or to the overall structure of the universe while existential is of, or relating to existence.

As adjectives the difference between ontological and existential

is that ontological is of, or relating to, ontology while existential is of, or relating to existence.

As a noun taxonomy

is the science or the technique used to make a classification.

As an adjective existential is

of, or relating to existence.

As adjectives the difference between existential and psychological

is that existential is of, or relating to existence while psychological is of or pertaining to psychology.