- introvert (v.)
- 1650s, from Latin intro "inward, within" (see intro-) + vertere "to turn" (see versus).
- introvert (n.)
- 1878, in zoology, "part or organ which is turned in upon itself," from introvert (v.). The psychological sense "introverted person" (opposed to extrovert) is 1917, from German, introduced there by C.G. Jung (1875-1961).
