1: of, relating to, or constituting a subject: as aobsolete: of, relating to, or characteristic of one that is a subject especially in lack of freedom of action or in submissiveness b: being or relating to a grammatical subject; especially:nominative 2: of or relating to the essential being of that which has substance, qualities, attributes, or relations 3 a: characteristic of or belonging to reality as perceived rather than as independent of mind :phenomenal — compare objective 1b b: relating to or being experience or knowledge as conditioned by personal mental characteristics or states 4 a (1): peculiar to a particular individual :personal<subjective judgments>(2): modified or affected by personal views, experience, or background <a subjective account of the incident>b: arising from conditions within the brain or sense organs and not directly caused by external stimuli <subjective sensations>c: arising out of or identified by means of one's perception of one's own states and processes <a subjective symptom of disease> — compare objective 1c 5: lacking in reality or substance :illusory