psyche

1 an immaterial force within a human being thought to give the body life, energy, and power disturbing, enigmatic paintings that seem to embody the psyche of this brilliant but troubled artist Synonyms soul, spiritRelated Words life, vitality; being, essence, quintessenceNear Antonyms body, flesh

2 the part of a person that feels, thinks, perceives, wills, and especially reasons a novel that explores the psyche of a depressed teen Synonyms brain, cerebrum, head, mind, thinkerRelated Words belfry, gray matter, intellect, intelligence, loaf [British slang], noodle, reason, skull; acumen, alertness, astuteness, brilliance, insight, judgment (or judgement), mentality, perception, perspicacity, sagacity, sapience, wisdom, wit; awareness, cognizance, consciousness, self-awareness, self-consciousness