Affixes

Examples brought in from Latin with the prefix attached include introduce (Latin introducere, from ducere, to lead), introspection (Latin introspicere, to look into), and introvert (originally a verb meaning to turn one's thoughts inwards in spiritual contemplation, from Latin vertere, to turn; its use as a term in psychology dates from the early 20th cent). A very few words have been created in English, such as introjection, in psychoanalysis the unconscious adoption of the ideas or attitudes of others (invented on the pattern of projection). See also extro‑.