esoteric

As adjectives the difference between esoteric and nebulous

is that esoteric is intended for or likely to be understood by only a small number of people with a specialized knowledge or interest, or an enlightened inner circle while nebulous is in the form of a cloud or haze; hazy.

Dark is a related term of esoteric.

As adjectives the difference between dark and esoteric

is that dark is having an absolute or (more often) relative lack of light while esoteric is intended for or likely to be understood by only a small number of people with a specialized knowledge or interest, or an enlightened inner circle.

As a noun dark

is a complete or (more often) partial absence of light.

As a noun argot

is a secret language or conventional slang peculiar to thieves, tramps and vagabonds.

As an adjective esoteric is

intended for or likely to be understood by only a small number of people with a specialized knowledge or interest, or an enlightened inner circle.

As adjectives the difference between existential and esoteric

is that existential is of, or relating to existence while esoteric is intended for or likely to be understood by only a small number of people with a specialized knowledge or interest, or an enlightened inner circle.

Esoteric is a synonym of concealed.

As an adjective esoteric

is intended for or likely to be understood by only a small number of people with a specialized knowledge or interest, or an enlightened inner circle.

As a verb concealed is

(conceal).

Universal is a related term of esoteric.

As adjectives the difference between universal and esoteric

is that universal is of or pertaining to the universe while esoteric is intended for or likely to be understood by only a small number of people with a specialized knowledge or interest, or an enlightened inner circle.

As a noun universal

is (philosophy) a characteristic or property that particular things have in common.

As adjectives the difference between esoteric and transcendental

is that esoteric is intended for or likely to be understood by only a small number of people with a specialized knowledge or interest, or an enlightened inner circle while transcendental is concerned with the a priori or intuitive basis of knowledge, independent of experience.

As a noun transcendental is

a transcendentalist.

As adjectives the difference between esoteric and ethereal

is that esoteric is intended for or likely to be understood by only a small number of people with a specialized knowledge or interest, or an enlightened inner circle while ethereal is pertaining to the hypothetical upper, purer air, or to the higher regions beyond the earth or beyond the atmosphere; celestial; otherworldly; as, ethereal space; ethereal regions.

Esoteric is a synonym of veiled.

As adjectives the difference between esoteric and veiled

is that esoteric is intended for or likely to be understood by only a small number of people with a specialized knowledge or interest, or an enlightened inner circle while veiled is hidden, such as by a veil.

As a verb veiled is

(veil).