subjective

American Heritage® Dictionary of the English Language, Fourth Edition

1. adj. Proceeding from or taking place in a person's mind rather than the external world: a subjective decision.
2. adj. Particular to a given person; personal: subjective experience.
3. adj. Moodily introspective.
4. adj. Existing only in the mind; illusory.
5. adj. Psychology Existing only within the experiencer's mind.
6. adj. Medicine Of, relating to, or designating a symptom or condition perceived by the patient and not by the examiner.
7. adj. Expressing or bringing into prominence the individuality of the artist or author.
8. adj. Grammar Relating to or being the nominative case.
9. adj. Relating to the real nature of something; essential.

Century Dictionary and Cyclopedia

1. Relating to or of the nature of a subject, as opposed to an object. In the older writers subjective is nearly synonymous with real, and still more closely so with the common modern meaning of objective. By Kant, following some of his earlier contemporaries, the word was restricted to the subject of thought, or the ego. See objective.
2. In literature and art, noting a production characterized by the prominence given to the individuality of the author or artist: as, the subjective school of painting; also, relating to such individuality. The writings of Shelley and Byron are essentially subjective, while the novels of Scott are objective.
3. Relating to a subject in a political sense; submissive; obedient.
4. In grammar: In Eskimo, noting the case expressing the subject of a transitive verb and the owner of an object. Also called transitive.
5. In other American languages, noting the case expressing the subject of a transitive or intransitive verb: used in languages in which these two forms are identical. Also called agentialis.

Wiktionary

1. adj. 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.)
2. adj. 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.
3. adj. Resulting from or pertaining to personal mindsets or experience, arising from perceptive mental conditions within the brain and not necessarily from external stimuli.
4. adj. Lacking in reality or substance.
5. adj. As used by Carl Jung the innate worldview orientation of the introverted personality types.
6. adj. philosophy, psychology Experienced by a person mentally and not directly verifiable by others

GNU Webster's 1913

1. adj. Of or pertaining to a subject.
2. adj. Especially, pertaining to, or derived from, one's own consciousness, in distinction from external observation; ralating to the mind, or intellectual world, in distinction from the outward or material excessively occupied with, or brooding over, one's own internal states.
3. adj. (Lit. & Art) Modified by, or making prominent, the individuality of a writer or an artist.

WordNet 3.0

1. adj. of a mental act performed entirely within the mind
2. adj. taking place within the mind and modified by individual bias