Empathy is the capacity to understand or feel what another person is experiencing from within their frame of reference, that is, the capacity to place oneself in another's position. Definitions of empathy encompass a broad range of social, cognitive, and emotional processes primarily concerned with understanding others (and others' emotions in particular). Types of empathy include cognitive empathy, emotional (or affective) empathy, somatic empathy, and spiritual empathy.
The English word empathy is derived from the Ancient Greek ἐμπάθεια (empatheia, meaning "physical affection or passion"). That word derives from ἐν (en, "in, at") and πάθος (pathos, "passion" or "suffering"). Theodor Lipps adapted the German aesthetic term Einfühlung ("feeling into") to psychology in 1903, and Edward B. Titchener translated Einfühlung into English as "empathy" in 1909. In modern Greek εμπάθεια may mean, depending on context, prejudice, malevolence, malice, or hatred.
Since its introduction into the English language, empathy has had a wide range of (sometimes conflicting) definitions among both researchers and laypeople. Empathy definitions encompass a broad range of phenomena, including caring for other people and having a desire to help them; experiencing emotions that match another person's emotions; discerning what another person is thinking or feeling; and making less distinct the differences between the self and the other.
Since empathy involves understanding the emotional states of other people, the way it is characterized derives from the way emotions are characterized. For example, if emotions are characterized by bodily feelings, then understanding the bodily feelings of another will be considered central to empathy. On the other hand, if emotions are characterized by a combination of beliefs and desires, then understanding those beliefs and desires will be more essential to empathy. The ability to imagine oneself as another person is a sophisticated process. However, the basic capacity to recognize emotions in others may be innate and may be achieved unconsciously.