Adjective

(en adjective)

Pertaining to subjects as opposed to objects (A subject'' is one who perceives or is aware; an ''object is the thing perceived or the thing that the subject is aware of.)

Formed, as in opinions, based upon a person's feelings or intuition, not upon observation or reasoning; coming more from within the observer than from observations of the external environment.

Resulting from or pertaining to personal mindsets or experience, arising from perceptive mental conditions within the brain and not necessarily or directly from external stimuli.

* {{quote-magazine, date=2013-08-03, volume=408, issue=8847, magazine=(The Economist)

, title= Boundary problems , passage=Economics is a messy discipline: too fluid to be a science, too rigorous to be an art. Perhaps it is fitting that economists’ most-used metric, gross domestic product (GDP), is a tangle too.

Lacking in reality or substance.

As used by (Carl Jung), the innate worldview orientation of the introverted personality types.

(philosophy, psychology) Experienced by a person mentally and not directly verifiable by others.