noun
1. a part, surface, or region that is inside or on the inside
2. inner character or nature
3. (Film) a film or scene shot inside a building, studio, etc
4. (Art Terms) a picture of the inside of a room or building, as in a painting or stage design
5. (Building) the inside of a building or room, with respect to design and decoration
adj
6. of, situated on, or suitable for the inside; inner
7. coming or acting from within; internal
8. (esp of one’s spiritual or mental life) secret or private; not observable
From Latin (adj), comparative of inter ‘within’