Existential psychotherapy has developed from the rich humanistic literary and philosophic traditions of Europe and America.

derived from experience or the experience of existence; "the rich experiential content of the teachings of the older philosophers"- Benjamin Farrington; "formal logicians are not concerned with existential matters"- John Dewey

derived from experience or the experience of existence, WordNet

Adjective with meaning similar to that on Heidegger's philosophy. It is used to indicate all what which concerns the idema and the intuition of the aither in all his forms. What that is related to the intuition of aither in his showing as characters.

of or pertaining to, or having the character of, existentialism.

Pertaining to existence or being: the Spanish verb haber and English there is, there are are existential expressions.

See Existential theology and Truth

of or as conceived by existentialism; "an existential moment of choice"

relating to or dealing with existence (especially with human existence)

relating to what really exists in the concrete.

specifying actual existence, rather than only possibility; as, the existential operator.

of or based on existence.

Having existence.